CVE-2025-21298

Published Jan 14, 2025

Last updated a year ago

CVSS critical 9.8
Microsoft
Windows

Overview

Description
Windows OLE Remote Code Execution Vulnerability
Source
secure@microsoft.com
NVD status
Analyzed
Products
windows_10_1507, windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_22h2, windows_11_23h2, windows_11_24h2, windows_server_2008, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025

Risk scores

CVSS 3.1

Type
Secondary
Base score
9.8
Impact score
5.9
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
CRITICAL

Weaknesses

secure@microsoft.com
CWE-416
nvd@nist.gov
NVD-CWE-noinfo

Social media

Hype score
Not currently trending
  1. [ SOC Alert => Windows OLE Zero-Click RCE Exploitation Detected (CVE-2025-21298) ] - Severity: Critical Mais um Walkthrough de um alerta da @LetsDefendIO. vamos para o alerta: #studytech #bolhasec #BlueTeam #Cibersegurança #InfoSec https://t.co/4XcOeP011e

    @0xKayky

    16 Nov 2025

    165 Impressions

    1 Retweet

    1 Like

    0 Bookmarks

    1 Reply

    0 Quotes

  2. Alert: Windows OLE Zero-Click RCE (CVE-2025-21298) detected via malicious RTF attachment (mail.rtf, hash df993d037cdb77a435d6993a37e7750dbbb16b2df64916499845b56aa9194184). Endpoint contained; apply Jan 2025 patches. #Exploit #SecurityAU #CVE https://t.co/AsuWHMYEVD

    @TweetThreatNews

    8 Aug 2025

    36 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  3. #letsdefend I investigated 'SOC336 - Windows OLE Zero-Click RCE Exploitation Detected (CVE-2025-21298)' incident on @LetsDefendIO

    @MutadzaM

    2 Jul 2025

    3 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  4. CRITICAL: New Windows vulnerability CVE-2025-21298 (CVSS 9.8!) Attackers can execute remote code on Windows systems just by sending a malicious file targeting Word & Outlook. https://t.co/Z0nSb3kjBs @three_cube

    @_aircorridor

    8 Jun 2025

    1570 Impressions

    4 Retweets

    19 Likes

    8 Bookmarks

    0 Replies

    0 Quotes

  5. I recently discovered the "PhantomRTF" campaign, which is carrying out a critical zero-day attack by targeting the Microsoft Outlook RTF file processing vulnerability (CVE-2025-21298). https://t.co/EW3I8mkZFV https://t.co/IHvurobCNi

    @umidcybers

    19 Apr 2025

    273 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  6. GitHub - mr-big-leach/CVE-2025-21298 - https://t.co/h3lYn18AsS

    @piedpiper1616

    14 Apr 2025

    1057 Impressions

    5 Retweets

    15 Likes

    12 Bookmarks

    0 Replies

    0 Quotes

  7. I just published SOC336-Windows OLE Zero-Click RCE Exploitation Detected (CVE-2025-21298) EventID https://t.co/t30Cg2zCx7 https://t.co/GYJw0xNweP

    @ObiOfundem

    14 Mar 2025

    2 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  8. • CVE-2025-21298 ثغره غريبه ب Microsoft Outlook تصنيفها : 9.8 ! Zero-Click تخليك تاخذ RCE 😂 اذا مهتم تقراء شركه Offsec كاتبه عنها : https://t.co/yckYLgbEre https://t.co/MIa8ckK8ol

    @0x4161

    13 Mar 2025

    5648 Impressions

    10 Retweets

    121 Likes

    60 Bookmarks

    2 Replies

    0 Quotes

  9. NEW No-Click Critical Vulnerability in Microsoft Windows: CVE-2025-21298 https://t.co/4TGJfOb0of #pentesting #Vulnerability #CyberSecurity #infosec https://t.co/E76i6YRNCY

    @ptracesecurity

    9 Mar 2025

    2751 Impressions

    11 Retweets

    36 Likes

    17 Bookmarks

    1 Reply

    0 Quotes

  10. NEW No-Click Critical Vulnerability in Microsoft Windows: CVE-2025-21298 #MicrosoftWindows #CriticalVulnerability #CVE2025-21298 #Cybersecurity #HackersArise https://t.co/CxDal2qL5X

    @reverseame

    6 Mar 2025

    5534 Impressions

    38 Retweets

    93 Likes

    43 Bookmarks

    20 Replies

    1 Quote

  11. A critical zero-click RCE vulnerability (CVE-2025-21298) in Windows OLE allows attackers to execute code without user interaction. Detected via a malicious RTF file. ⚠️ #WindowsOLE #ZeroClick #USA link: https://t.co/hlwv47A5nG https://t.co/pcya50ltjy

    @TweetThreatNews

    2 Mar 2025

    99 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  12. I think can realize the troll store through (CVE-2025-21298) a little magic attack in ios 17.x to ios18.2rc.

    @lczyyds668

    26 Feb 2025

    40 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  13. 🚨 #CVE-2025-21298: Critical #Microsoft Outlook Vulnerability Exploited via Embedded Content https://t.co/lsHHuaiVof

    @UndercodeUpdate

    24 Feb 2025

    49 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  14. 💥 FLASH NOTICE 💥 CVE-2025-21298 is a critical zero-click vulnerability in #Windows Object Linking and Embedding (OLE) technology. #Microsoft has released patches to address this vulnerability - users are strongly advised to apply them ASAP. More: https://t.co/n5pLUO0J5r https:

    @Avertium

    14 Feb 2025

    4 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  15. CVE-2025-21298: Kritikus Windows OLE Zero-Click sérülékenység A modern kiberfenyegetések között a zero-click sebezhetőségek kiemelten veszélyesek, mivel minimális vagy akár nulla felhasználói interakciót igényelnek. A CVE-2025-21298 különösen kritikus, mivel egy egyszerű e-mail…

    @freszferenc

    9 Feb 2025

    39 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  16. Top 5 Trending CVEs: 1 - CVE-2025-23369 2 - CVE-2025-23419 3 - CVE-2025-21298 4 - CVE-2024-21413 5 - CVE-2013-2678 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    9 Feb 2025

    11 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  17. ⚠️ Another CVE SOC Alert: Windows OLE Zero-Click RCE Exploitation Detected CVE: CVE-2025-21298 Type: Malware Difficulty: Medium Event ID: 314 https://t.co/vwe2FCwf5p

    @LetsDefendIO

    8 Feb 2025

    2544 Impressions

    3 Retweets

    34 Likes

    9 Bookmarks

    0 Replies

    0 Quotes

  18. [1day1line] CVE-2025-21298: Windows OLE Double Free Vulnerability https://t.co/trGbpfViGu Hello. Today's one-line issue is CVE-2025-21298 which is Windows OLE Double Free vulnerability. The pstmContents used in the UtOlePresStmToContentsStm function of ole32.dll were released…

    @hackyboiz

    8 Feb 2025

    4012 Impressions

    25 Retweets

    63 Likes

    35 Bookmarks

    0 Replies

    0 Quotes

  19. [1day1line] CVE-2025-21298: Windows OLE Double Free Vulnerability Hello. Today's one-line issue is CVE-2025-21298 which is Windows OLE Double Free vulnerability. The pstmContents used in the UtOlePresStmToContentsStm function of ole32.dll were released twice, causing Double… ht

    @hackyboiz

    8 Feb 2025

    22 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  20. Micropatches Released for Windows OLE Remote Code Execution (CVE-2025-21298) https://t.co/QTSrBHyMG4 https://t.co/Ays6R4vFXv

    @0patch

    7 Feb 2025

    550 Impressions

    4 Retweets

    7 Likes

    0 Bookmarks

    1 Reply

    1 Quote

  21. CVE-2025-21298 is a no-click, high-risk vulnerability in Windows. Malicious RTF files can execute code remotely just by being previewed in Outlook. Get the full details and mitigation steps: https://t.co/lMXGHFuq49 #windows #Vulnerability #ZeroClick #RemoteCodeExecution https:

    @GeekFeedNet

    5 Feb 2025

    53 Impressions

    0 Retweets

    1 Like

    1 Bookmark

    0 Replies

    0 Quotes

  22. In January 2025, a critical security vulnerability identified as CVE-2025-21298 was disclosed, affecting Windows Object Linking and Embedding (OLE) technology. This vulnerability, with a CVSS score of 9.8, allows for remote code execution (RCE) through specially crafted… https

    @y1659rsgh

    3 Feb 2025

    7 Impressions

    1 Retweet

    0 Likes

    0 Bookmarks

    1 Reply

    0 Quotes

  23. CVE-2025-21298 is a no-click, high-risk vulnerability in Windows. Malicious RTF files can execute code remotely just by being previewed in Outlook. Get the full details and mitigation steps: https://t.co/3HQncnbEiP

    @offsectraining

    3 Feb 2025

    64341 Impressions

    260 Retweets

    826 Likes

    400 Bookmarks

    7 Replies

    10 Quotes

  24. 🔒 Discover #CVE-2025-21298, a critical flaw affecting Windows! 🚨 Protect your systems now with these 3 simple steps. #Exploit avaliable #CyberSecurity #Windows #InformationSecurity https://t.co/dsrhA6ndn6

    @_F2po_

    1 Feb 2025

    101 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  25. 🔒 Découvrez la CVE-2025-21298, une faille critique touchant Windows ! 🚨 Protégez vos systèmes maintenant avec ces 3 étapes simples. #CyberSécurité #Windows #SécuritéInformatique https://t.co/95qenH7Q09

    @_F2po_

    1 Feb 2025

    35 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  26. Top 5 Trending CVEs: 1 - CVE-2025-21298 2 - CVE-2025-24118 3 - CVE-2024-57727 4 - CVE-2025-24883 5 - CVE-2025-21293 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    1 Feb 2025

    120 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  27. GitHub - ynwarcs/CVE-2025-21298: Proof of concept & details for CVE-2025-21298 - https://t.co/hlMXdSIRNJ

    @piedpiper1616

    1 Feb 2025

    822 Impressions

    5 Retweets

    13 Likes

    6 Bookmarks

    0 Replies

    0 Quotes

  28. NEW No-Click Critical Vulnerability in Microsoft Windows: CVE-2025-21298

    @StreetWalker212

    1 Feb 2025

    263 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  29. NEW! No-Click, Critical Vulnerability in Windows! CVE-2025-21298 Learn more here! https://t.co/zCAuGWv7s1 https://t.co/ShgVPN7KBp

    @three_cube

    31 Jan 2025

    8869 Impressions

    22 Retweets

    102 Likes

    23 Bookmarks

    3 Replies

    2 Quotes

  30. به تازگی آسیب پذیری جدید برای Object Linking and Embedding (OLE) در ویندوز با کد شناسایی CVE-2025-21298 منتشر شده است. این آسیب پذیری از نوع RCE بوده و بسیار خطرناک می باشد چرا که نیازی به اجرای یک فایل یا کلیک کردن روی یک لینک نیست. https://t.co/Poz3aKY03t https://t.co/Hu3lA7L1

    @AmirHossein_sec

    30 Jan 2025

    33 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  31. Viewing RTF documents regularly in Microsoft Word or Outlook? CVE-2025-21298 allows attackers to execute code and compromise systems with minimal user interaction. More on this and 4️⃣ other vulns in The Bug Report. https://t.co/sfgB5pUvCz https://t.co/HUZRl393KP

    @TrellixARC

    30 Jan 2025

    238 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  32. ⚠️ OLE objects embedded within RTF files are suspicious. ⚠️ 🤔 🚨 But if the context is an email containing an attached RTF with an OLE object, it may be trying to exploit CVE-2025-21298! 🚨☠️ https://t.co/mIf3aFivVl #exploit #RCE #maldoc #CVE https://t.co/cNbBnyyVAT

    @filescan_itsec

    29 Jan 2025

    309 Impressions

    2 Retweets

    5 Likes

    1 Bookmark

    0 Replies

    0 Quotes

  33. 🚨 Breaking: Critical Zero-Click RCE Vulnerability Discovered in Outlook (CVE-2025-21298) 🚨 A newly uncovered zero-click remote code execution (RCE) vulnerability in Microsoft Outlook could allow attackers to execute malicious code without any user interaction. This means… http

    @IntCyberDigest

    28 Jan 2025

    2149 Impressions

    3 Retweets

    21 Likes

    8 Bookmarks

    3 Replies

    0 Quotes

  34. CVE-2025-21298: Vulnerabilidad Crítica en Windows OLE que Amenaza la Seguridad de Outlook https://t.co/raiTezuvsm

    @Error400cl

    27 Jan 2025

    3 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  35. APT Groups in action again, started to Exploit CVE-2025-21298 by Botnet and C2-Operation IP: 185.199.109.133 MD5: 9d68678aeee52684bbe3c983222b1da3 Malware found linked IP are: CobaltStrike, Blackmoon, Mimikatz, njRAT, QuasarRAT, RedLineStealer, Lumma, and TFRv2 and v1. https://

    @byt3n33dl3

    27 Jan 2025

    184 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    1 Reply

    1 Quote

  36. Detectada vulnerabilidad crítica en Microsoft (CVE-2025-21298). Este fallo en la tecnología OLE de Windows permite la ejecución remota de código (RCE) sin interacción del usuario, afectando a múltiples versiones de Windows. Más detalles aquí: https://t.co/8gnhJ9ihGy https://t.co/

    @s2grupo

    27 Jan 2025

    124 Impressions

    0 Retweets

    1 Like

    1 Bookmark

    0 Replies

    0 Quotes

  37. CVE-2025-21298 Windows OLE Remote Code Execution Vulnerability! A critical vulnerability in Windows Object Linking and Embedding (OLE) technology, which enables remote code execution (RCE) with a CVSS severity score of 9.8. Read more: https://t.co/vTN6RWA74m #cve #rce #windows

    @0xKrat0s

    27 Jan 2025

    80 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    1 Reply

    0 Quotes

  38. Top 5 Trending CVEs: 1 - CVE-2025-23006 2 - CVE-2024-50050 3 - CVE-2024-43468 4 - CVE-2025-0282 5 - CVE-2025-21298 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    27 Jan 2025

    9 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  39. 💡Chinese #APT 🇨🇳 Groups started to #Exploit #CVE-2025-21298 by #Botnet C2 IP: 185.199.109.133 MD5: 9d68678aeee52684bbe3c983222b1da3 #Malware found linked IP are: #CobaltStrike, #Blackmoon, #Mimikatz, #njRAT, #QuasarRAT, #RedLineStealer #infosec #OSINT #security #china #TO

    @RakeshKrish12

    27 Jan 2025

    5734 Impressions

    26 Retweets

    78 Likes

    38 Bookmarks

    2 Replies

    0 Quotes

  40. Outlook の Zero-Click 脆弱性 CVE-2025-21298 に注意:2025/01 の月例で対応済み https://t.co/BFZixIgjV2 メールにエンベッドされた OLE オブジェクトが関連する、Outlook の脆弱性が FIX とのことです。文中にもあるように、この脆弱性は、Patch Tuesday 2025 January で FIX… https://t.co/mFBJC4JPYa

    @iototsecnews

    27 Jan 2025

    352 Impressions

    2 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    1 Quote

  41. A critical zero-click vulnerability (CVE-2025-21298) in Windows OLE allows malicious code execution simply by previewing a harmful RTF email. Security experts urge immediate risk mitigation! ⚠️ #Microsoft #Windows #Malware link: https://t.co/ACkJEB7RtC https://t.co/5uAUxSJr5I

    @TweetThreatNews

    26 Jan 2025

    70 Impressions

    0 Retweets

    2 Likes

    1 Bookmark

    0 Replies

    0 Quotes

  42. Zero-Click Outlook RCE Vulnerability (CVE-2025-21298), PoC Released https://t.co/58e31Vuh45

    @PVynckier

    26 Jan 2025

    155 Impressions

    3 Retweets

    6 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  43. This is a proof-of-concept for CVE-2025-21298 - Windows OLE Remote Code Execution Vulnerability (CVSS 9.8) https://t.co/3Xd2Vu8OKN https://t.co/Kmb0P5zkVb

    @secharvesterx

    26 Jan 2025

    54 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  44. اکسپلویت آسیب پذیری CVE-2025-21298 در Microsoft Outlook منتشر شد! #Cyber_security_news #اخبار_امنیت_سایبری #CVE_2025_21298 #Microsoft_Outlook https://t.co/hbY40TyoRn

    @vulnerbyte

    25 Jan 2025

    33 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  45. There is a vulnerability CVE-2025-21298 every IT person needs to update your windows computers right away and it has to do with Microsoft outlook. It’s a nasty one .

    @RealDrewJones

    25 Jan 2025

    47 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    4 Replies

    0 Quotes

  46. CVE-2025-21298 Exploit Code Released #CVE-2025-21298 #Microsoft #ExploitCode https://t.co/O5we5RBBSv

    @pravin_karthik

    24 Jan 2025

    56 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  47. 🚨 CVE-2025-21298: Critical RCE vulnerability in Windows OLE discovered! 🛑 Attackers can execute malicious code to take control of affected systems. Don't miss out on the details & patch now! 🔒 🔗https://t.co/dJc8QcIhkE #go_to_cve #CVE #RCE #WindowsOLE #Security

    @soltanali0

    23 Jan 2025

    264 Impressions

    0 Retweets

    8 Likes

    0 Bookmarks

    2 Replies

    0 Quotes

  48. 🚨 Zero-Click Vulnerability Alert: Microsoft patched a critical zero-click RCE vulnerability in Windows OLE (CVE-2025-21298). 9.8 on CVSS and allows attackers to exploit systems with no user interaction. - Just previewing an email. Let’s break it down 🧵👇

    @mattjay

    23 Jan 2025

    103031 Impressions

    214 Retweets

    981 Likes

    547 Bookmarks

    10 Replies

    18 Quotes

  49. A critical vulnerability (CVE-2025-21298) in Windows enables remote code execution through a malicious RTF file sent via email. It impacts Windows 10, 11, and Server, with a severity score of 9.8/10 (CVSS). #CyberSecurity #InfoSec https://t.co/KEKGrrupq9

    @0x_Lady

    23 Jan 2025

    84 Impressions

    0 Retweets

    1 Like

    1 Bookmark

    1 Reply

    0 Quotes

  50. 🚨 ALERTE #CYBER 🚨 Nouvelle vulnérabilité critique dans #Microsoft Outlook. Une faille majeure, référencée CVE-2025-21298, a été découverte dans #Outlook. Plus d'infos en commentaire 👇 https://t.co/Gu9Z7J8XAg

    @MgmSolutionsfr

    23 Jan 2025

    99 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    3 Replies

    0 Quotes

Configurations

References

Sources include official advisories and independent security research.