CVE-2025-53771

Published Jul 20, 2025

Last updated 7 months ago

CVSS medium 6.5
Microsoft SharePoint

Overview

Description
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Source
secure@microsoft.com
NVD status
Analyzed
Products
sharepoint_server

Risk scores

CVSS 3.1

Type
Secondary
Base score
6.5
Impact score
2.5
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

secure@microsoft.com
CWE-287

Social media

Hype score
Not currently trending
  1. 2025年 実際に悪用された高リスク脆弱性 Top10 1 Langflow 未認証コード実行 CVE-2025-3248 2 Microsoft SharePoint Server RCE(ToolShell) CVE-2025-53770 / CVE-2025-53771 3 sudo 権限昇格(chroot処理不備) CVE-2025-32463 4 Docker Desktop コンテ

    @yousukezan

    1 Jan 2026

    1476 Impressions

    1 Retweet

    15 Likes

    7 Bookmarks

    0 Replies

    0 Quotes

  2. #DFIR #Blue_Team_Techniques #Purple_Team_Exercises 1⃣ Hunting for SharePoint In-Memory ToolShell Payloads (CVE-2025-53770, CVE-2025-53771) https://t.co/1H3yTQ1eGr // A walk-through showing how to analyze ToolShell payloads, starting with acquiring packets all the way to decodi

    @ksg93rd

    3 Dec 2025

    616 Impressions

    3 Retweets

    2 Likes

    3 Bookmarks

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  3. 🚨 Back in July, our team detected and blocked widespread exploitation of an MS SharePoint zero-day chain (CVE-2025-49706, CVE-2025-49704, CVE-2025-53770, & CVE-2025-53771) targeting multiple sectors. 🔗 Get full details and mitigation guidance: https://t.co/FJO0hXZQjF h

    @FortiGuardLabs

    10 Nov 2025

    241 Impressions

    1 Retweet

    1 Like

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  4. 🚨 CVE-2025-53771 - medium 🚨 Microsoft SharePoint Server - Authentication Bypass (ToolShell) > Microsoft Office SharePoint Server contains an improper authentication vulnerability ... 👾 https://t.co/klKPQR1liJ @pdnuclei #NucleiTemplates #cve

    @pdnuclei_bot

    19 Oct 2025

    141 Impressions

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  5. Hello! Today’s 1day1line is about CVE-2025-53770 (RCE) & CVE-2025-53771 (Auth bypass) in SharePoint — linked to earlier CVE-2025-49704 & 49706. These vulnerabilities affect on-premises Microsoft SharePoint. Check out the post! https://t.co/poMIov7NA5

    @hackyboiz

    20 Sept 2025

    2499 Impressions

    12 Retweets

    49 Likes

    22 Bookmarks

    1 Reply

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  6. https://t.co/r0XB1DhEnq 🗣🇨🇵Alerte ANSSI : #Microsoft #SharePoint Server signale la vulnérabilité CVE-2025-53771 permet à un attaquant de provoquer une usurpation d'identité sur un réseau, une vielle faille déjà présente sur SharePoint Enterprise Server 2010 et 2

    @IvanFeghali

    8 Sept 2025

    89 Impressions

    0 Retweets

    1 Like

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  7. Trellix researchers look into a recent wave of exploitation targeting ToolShell vulnerabilities in Microsoft SharePoint Server (CVE-2025-49704, CVE-2025-49706, CVE-2025-53770, and CVE-2025-53771). https://t.co/oeIcaLYlcX https://t.co/SSiUr8XHAN

    @virusbtn

    5 Sept 2025

    1402 Impressions

    7 Retweets

    29 Likes

    8 Bookmarks

    0 Replies

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  8. ⚠️ Weekly vuln radar. https://t.co/Cd6L8ACyLV – spot what’s trending before it’s everywhere: CVE-2025-53770 CVE-2025-43300 CVE-2025-5777 CVE-2024-21887 CVE-2023-46604 (@ThreatBookLabs) CVE-2025-7776 CVE-2025-54309 CVE-2025-7775 CVE-2025-53771 https://t.co/q4Rx5wWFSt

    @ptdbugs

    29 Aug 2025

    286 Impressions

    0 Retweets

    2 Likes

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  9. #Proactive #Security for CVE-2025-53770 and CVE-2025-53771 #SharePoint_Attacks https://t.co/tloLD9OPvK https://t.co/hcUdHNHgIF

    @omvapt

    22 Aug 2025

    65 Impressions

    0 Retweets

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  10. #Proactive_Security for CVE-2025-53770 and CVE-2025-53771 #SharePoint_Attacks https://t.co/bC4ahVz4UO https://t.co/0kySI9Tg2R

    @omvapt

    21 Aug 2025

    30 Impressions

    0 Retweets

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  11. CVE-2025-53770 (CVSS 9.8) and CVE-2025-53771 - also known as the SharePoint Zero Days - allow unauthenticated attackers to seize control of servers, steal cryptographic keys, and plant persistent backdoors. What started as 75 confirmed breaches has now grown to 400+ https://t.co

    @ExtraHop

    21 Aug 2025

    81 Impressions

    0 Retweets

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  12. New IOC Alert → CVE-2025-53770 and CVE-2025-53771: Actively Exploited SharePoint Vulnerabilities. ■ Indicator: CVE-2025-49704

    @CTI131

    21 Aug 2025

    1 Impression

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  13. New IOC Alert → SharePoint Vulnerabilities (CVE-2025-53770 & CVE-2025-53771): Everything You Need to Know. ■ Indicator: CVE-2025-23266

    @CTI131

    20 Aug 2025

    0 Impressions

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  14. 【漏洞工具】SharePoint 2025 RCE 图形化漏洞利用工具 相关 CVE 编号为: CVE-2025-53770 CVE-2025-53771 CVE-2025-49704 CVE-2025-49706 https://t.co/8DPcYBYCq4 https://t.co/lts8kW1swv

    @cybersecuritysl

    19 Aug 2025

    1260 Impressions

    7 Retweets

    18 Likes

    16 Bookmarks

    0 Replies

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  15. Ah bah effectivement… ça n’aura pas traîné 😬 Plus de 400 serveurs #SharePoint déjà compromis via les zero-day CVE-2025-53770 & CVE-2025-53771, attribués à 3 groupes chinois 👉 https://t.co/hD2yQB1HML

    @Guardia_School

    19 Aug 2025

    37 Impressions

    0 Retweets

    1 Like

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  16. CVE-2025-53770 and CVE-2025-53771 evolved from vulnerabilities first disclosed at Pwn2Own Berlin 2025. Through @thezdi, Trend Micro has provided proactive defense and protection for customers since May. Be proactive in staying ahead of these vulnerabilities:⬇️

    @trendai_RSRCH

    14 Aug 2025

    357 Impressions

    0 Retweets

    4 Likes

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  17. Top 5 Decoys / Honeypots to Deploy This Week - go get that 0day payload!🧵 1. Microsoft SharePoint - Still receiving a lot of buzz and activity from the recent big vulnerabilities CVE-2025-53770 and CVE-2025-53771 https://t.co/gvtbrJhTdz

    @DefusedCyber

    13 Aug 2025

    739 Impressions

    2 Retweets

    8 Likes

    4 Bookmarks

    1 Reply

    0 Quotes

  18. We explored how CVE-2025-53770 and CVE-2025-53771 evolved from earlier vulnerabilities, using deserialization and ViewState mechanisms to allow unauthenticated remote code execution. Discover the complexities of these vulnerabilities:⬇️ https://t.co/PqCWrvrxLp

    @trendai_RSRCH

    7 Aug 2025

    934 Impressions

    2 Retweets

    3 Likes

    0 Bookmarks

    0 Replies

    1 Quote

  19. CVE-2025-53770 and CVE-2025-53771 evolved from vulnerabilities first disclosed at Pwn2Own Berlin 2025. Through @thezdi, Trend Micro has provided proactive defense and protection for customers since May. Be proactive in staying ahead of these vulnerabilities:⬇️

    @trendai_RSRCH

    6 Aug 2025

    924 Impressions

    7 Retweets

    14 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  20. New cyber threat: ToolShell is exploiting #SharePoint flaws (CVE-2025-53770 & CVE-2025-53771) for full server access — no login needed. Learn how it works + how to defend against it: Critical Cyber Update: https://t.co/pzkn6AelYy #Cybersecurity #MatriumInsights #ToolShel

    @Matrium_Tech

    4 Aug 2025

    17 Impressions

    0 Retweets

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  21. The zero-day in Microsoft SharePoint (CVE-2025-53770 and CVE-2025-53771) has been known for a few days now. What exactly happened, how was the #zeroday discovered, and are we sure we caught it in time (if that’s possible)? https://t.co/eKNwY8JxSz

    @michael_gazzano

    3 Aug 2025

    73 Impressions

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  22. : تنبيه أمني عاجل لمستخدمي SharePoint مهاجمون مجهولون يستغلون ثغرتين خطيرتين في SharePoint Server 2016 و2019 والإصدار الاشتراكي — CVE-2025-53770 (تقييم خطورة 9.8) وCVE-2025-53771 (تقييم

    @KasperskyKSA

    3 Aug 2025

    182 Impressions

    0 Retweets

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  23. Critical SharePoint vulnerabilities CVE-2025-53770 & CVE-2025-53771 are under active attack! Learn how the ToolShell exploit chain targets on-premises SharePoint servers and how Vectra AI’s platform detects and stops these threats before they escalate. 🔒 Stay ahead of

    @Vectra_AI

    30 Jul 2025

    90 Impressions

    0 Retweets

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  24. Microsoft biztonsági frissítések SharePoint nulladik napi sebezhetőségekhez A Microsoft SharePoint biztonsági frissítéseket adott ki a CVE-2025-53770 és a CVE-2025-53771 azonosítójú két nulladik napi sebezhetőséghez, amelyek világszerte veszélyeztettek rendszere

    @linuxmint_hun

    30 Jul 2025

    45 Impressions

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  25. Microsoft SharePoint ToolPane Authentication Bypass Vulnerability (CVE-2025-53771) #AuthenticationBypassVulnerability #CVE202553771 #CyberSecurity #Microsoft #MicrosoftSharePointServer https://t.co/VDMqbQQFiA https://t.co/jb1HhNG4Ja

    @SystemTek_UK

    28 Jul 2025

    8 Impressions

    0 Retweets

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  26. 【脅威分析レポート】CVE-2025-53770およびCVE-2025-53771 オンプレミスのMicrosoft SharePoint Serverに影響を与える2つの脆弱性の悪用についての調査結果を解説しています。 詳しくは👇 https://t.co/D1Zk9vCunI #Cybereason #サ

    @cybereasonjp

    28 Jul 2025

    114 Impressions

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  27. New ‘ToolShell’ Exploit Chain Targets SharePoint Servers via CVE-2025-53770 and CVE-2025-53771 https://t.co/MH9Lhxa7x8

    @DCICyberSecNews

    27 Jul 2025

    24 Impressions

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  28. The latest SharePoint 0-day attack chain (CVE-2025-53770 + CVE-2025-53771) results in unauthenticated RCE on on-prem servers. I break down how it was discovered, how it works, and how to protect your servers in this new video. PLUS a demo of the exploit working in a lab https://

    @0xTib3rius

    26 Jul 2025

    8442 Impressions

    28 Retweets

    186 Likes

    61 Bookmarks

    2 Replies

    4 Quotes

  29. Urgent SharePoint Vulnerability Alert Unknown attackers are actively exploiting two critical vulnerabilities in SharePoint Server 2016, 2019, and the Subscription Edition — CVE-2025-53770 (CVSS 9.8) and CVE-2025-53771 (CVSS 6.3). These flaws allow remote execution of malicious

    @KasperskyKSA

    26 Jul 2025

    165 Impressions

    0 Retweets

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  30. 🌩️ @Microsoft 𝚂𝚑𝚊𝚛𝚎𝙿𝚘𝚒𝚗𝚝 𝟢-𝙳𝚊𝚢 𝚂𝚙𝚛𝚎𝚊𝚍𝚜 𝚆𝚊𝚛𝚕𝚘𝚌𝚔 𝚁𝚊𝚗𝚜𝚘𝚖𝚠𝚊𝚛𝚎 🌩️🔓 #cyber_security_highlights 💡 𝙾𝚟𝚎𝚛𝚟𝚒𝚎𝚠 #did_you_know_that @Mic

    @MahRabie

    26 Jul 2025

    50 Impressions

    0 Retweets

    1 Like

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  31. [ZDI-25-652|CVE-2025-53771] (Pwn2Own) Microsoft SharePoint ToolPane Authentication Bypass Vulnerability (CVSS 6.5; Credit: Viettel Cyber Security) https://t.co/PimSmtKc7A

    @TheZDIBugs

    25 Jul 2025

    836 Impressions

    3 Retweets

    11 Likes

    1 Bookmark

    0 Replies

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  32. Emergency SharePoint RCE Warning – CVE-2025-53770 & CVE-2025-53771 Under Active Exploit - IT SPARC Cast - CVE of the Week

    @ITSPARCCast

    25 Jul 2025

    56052 Impressions

    0 Retweets

    1 Like

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  33. In this episode of IT SPARC Cast - CVE of The Week, @john_Video and @loudoggeek sound the alarm on two critical zero-day vulnerabilities impacting on-premise Microsoft SharePoint servers: CVE-2025-53770 and CVE-2025-53771. Exploited via a chained attack called “ToolShell,” th

    @ITSPARCCast

    25 Jul 2025

    2 Impressions

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  34. Hackers Exploiting Sharepoint 0-day Vulnerability to Deploy Warlock Ransomware https://t.co/eB5I7DEyG7 Microsoft has issued urgent warnings about active exploitation of critical SharePoint vulnerabilities CVE-2025-53770 and CVE-2025-53771 by multiple threat actors, including t

    @f1tym1

    25 Jul 2025

    13 Impressions

    0 Retweets

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  35. 🚨 Zero-day alert @ESETresearch uncovered active exploitation of CVE-2025-53770 and CVE-2025-53771 - ToolShell attacks targeting Microsoft SharePoint servers. The US tops the list with 13.3% of global hits. Watch @TonyAtESET explain the latest findings. https://t.co/n4pU32HrtS

    @ESET

    25 Jul 2025

    32 Impressions

    1 Retweet

    1 Like

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  36. 🚨 CRITICAL: Chinese hackers are actively exploiting #SharePoint "ToolShell" zero-days (CVE-2025-53770 & CVE-2025-53771) to deploy ransomware & steal data. 3 threat groups targeting thousands of orgs worldwide. PATCH NOW! https://t.co/cRPuWTocpn #CyberSecurity #toolsh

    @cyberkendra

    24 Jul 2025

    25 Impressions

    0 Retweets

    0 Likes

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  37. Critical SharePoint vulnerabilities CVE-2025-53770 & CVE-2025-53771 are under active attack! Learn how the ToolShell exploit chain targets on-premises SharePoint servers and how Vectra AI’s platform detects and stops these threats before they escalate. 🔒 Stay ahead o

    @Vectra_AI

    24 Jul 2025

    108 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  38. Microsoft SharePoint Vulnerabilities Exploitation and Ransomware Escalation(CVE-2025-53770 and CVE-2025-53771): https://t.co/A9O2xcD8b0

    @cyberbivash

    24 Jul 2025

    2 Impressions

    0 Retweets

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  39. Срочно обновите Microsoft Sharepoint #CVE-2025-53770 и #CVE-2025-53771 https://t.co/KaCdyHoOIj

    @kilin_vr

    24 Jul 2025

    18 Impressions

    0 Retweets

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  40. Chinese hackers Storm-2603 are now exploiting SharePoint zero-days CVE-2025-53770 and CVE-2025-53771 to deploy Warlock ransomware, using web shells, GPOs, and credential theft tools to maintain persistent access worldwide. #CyberThreat #SharePoint https://t.co/6b844Ey3r1

    @TweetThreatNews

    24 Jul 2025

    47 Impressions

    0 Retweets

    0 Likes

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  41. Exploit module for Microsoft SharePoint ToolPane Unauthenticated RCE (CVE-2025-53770 and CVE-2025-53771) https://t.co/VrzCJYymiw

    @S0ufi4n3

    24 Jul 2025

    782 Impressions

    3 Retweets

    12 Likes

    3 Bookmarks

    0 Replies

    0 Quotes

  42. ToolShell脆弱性攻撃チェーン(CVE-2025-53770+CVE-2025-53771)に対応するMetasploitモジュールが公表された。 https://t.co/SjU0ozaHO3

    @__kokumoto

    24 Jul 2025

    1523 Impressions

    1 Retweet

    21 Likes

    4 Bookmarks

    0 Replies

    0 Quotes

  43. #BREAKING #ESETResearch has been monitoring the recently discovered #ToolShell zero-day vulnerabilities in #SharePoint Server: CVE-2025-53770 and CVE-2025-53771. SharePoint Online in Microsoft 365 is not impacted. https://t.co/NssYU2rZTg 1/5

    @ESETresearch

    24 Jul 2025

    7248 Impressions

    39 Retweets

    92 Likes

    32 Bookmarks

    3 Replies

    0 Quotes

  44. Thanks to a scan conducted by @leak_ix, we have shared SharePoint IPs confirmed vulnerable to CVE-2025-53770, CVE-2025-53771. 424 SharePoint IPs found on 2025-07-23. One-off data in our Vulnerable HTTP report - https://t.co/qxv0Gv5ELc Tree map: https://t.co/e8WGDJEwgh https:/

    @Shadowserver

    24 Jul 2025

    4572 Impressions

    19 Retweets

    40 Likes

    19 Bookmarks

    2 Replies

    0 Quotes

  45. 🚨 Critical Alert: Zero-Day in SharePoint under attack! CVE-2025-53770 is allowing remote code execution on SharePoint 2016, 2019, & Subscription Editions. 🛡️ Also, CVE-2025-53771 helps bypass past mitigations. Patch up NOW! Get our #threatadvisory here: https://t.co/4

    @sequretek_sqtk

    24 Jul 2025

    118 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  46. Microsoft SharePointの深刻な脆弱性に対する攻撃が活発化 PoCも公開(CVE-2025-53770,CVE-2025-53771,CVE-2025-49704,CVE-2025-49706)|セキュリティとITのニュース-セキュリティ対策Lab https://t.co/enCPPrwlcM

    @Luke06121

    24 Jul 2025

    17 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  47. 🚨 Critical SharePoint Vulnerabilities in the Wild 🚨 Trustwave's SpiderLabs just published a new deep dive on the active exploitation of two critical SharePoint zero-days: CVE-2025-53770 (RCE) and CVE-2025-53771 (path traversal). These flaws are being leveraged by threat ac

    @SpiderLabs

    23 Jul 2025

    446 Impressions

    0 Retweets

    2 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  48. Analyzing Sharepoint Exploits (CVE-2025-53770, CVE-2025-53771), (Wed, Jul 23rd) https://t.co/nMSt4DrCST #SANS #Cybersecurity https://t.co/scHquE5g3n

    @PoseidonTPA

    23 Jul 2025

    3 Impressions

    0 Retweets

    0 Likes

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    0 Replies

    0 Quotes

  49. Google Threat Intel is tracking widespread exploitation of on-prem SharePoint vulns: CVE-2025-53770 & CVE-2025-53771. This is a severe threat. We recommend patching, threat hunting and rotating keys. Learn more, incl. how to detect this threat in Google SecOps:

    @JumpforJoyce

    23 Jul 2025

    19818 Impressions

    43 Retweets

    153 Likes

    46 Bookmarks

    4 Replies

    6 Quotes

  50. Analyzing Sharepoint Exploits (CVE-2025-53770, CVE-2025-53771) https://t.co/jSIMEGshh1 https://t.co/6OLwDdL1Bz

    @sans_isc

    23 Jul 2025

    1525 Impressions

    2 Retweets

    5 Likes

    2 Bookmarks

    0 Replies

    0 Quotes

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