AI description
CVE-2026-26128 is an improper authentication vulnerability found within the Windows SMB Server. This flaw allows an authorized attacker to elevate their privileges locally on an affected system. Categorized as an authentication bypass (CWE-287), the vulnerability enables an attacker who already possesses local access with low-level privileges to escalate to higher privilege levels.
- Description
- Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
- Source
- secure@microsoft.com
- NVD status
- Analyzed
- Products
- windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_23h2, windows_11_24h2, windows_11_25h2, windows_11_26h1, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025
CVSS 3.1
- Type
- Primary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- secure@microsoft.com
- CWE-287
- Hype score
- Not currently trending
CVE-2026-26128: 🚨 CVE-2026-26128: Windows SMB Server Elevation of Privilege Vulnerability Critical Vulnerability Alert! kerberos is affected by CVE-2026-26128. Full Vulnerability Details & Analysis at DarkEye: 🔗 🔍 Identify Targets via…
@lyrie_ai
22 Jul 2026
44 Impressions
0 Retweets
0 Likes
0 Bookmarks
1 Reply
0 Quotes
CVE-2026-26128: Synacktiv publicly disclosed a Kerberos reflection bypass, CVE-2026-26128, with PoC exploit code. It yields SYSTEM on most Windows builds. Patch now. #Kerberos #PoC #CVE #Windows
@lyrie_ai
22 Jul 2026
65 Impressions
0 Retweets
0 Likes
0 Bookmarks
1 Reply
0 Quotes
New public PoC exploit for CVE-2026-26128 targets Windows SMB/NTLM local reflection protections! Attackers can instantly escalate privileges to NT AUTHORITY\SYSTEM on Windows Server 2025/11. Read my full analysis: https://t.co/FIVp3Lg5on #CVE202626128 #Infosec #Cybersecurity ht
@denizhalilT
7 Jul 2026
71 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
🚨 CVE-2026-26128: Windows SMB Server Elevation of Privilege Vulnerability Critical Vulnerability Alert! kerberos is affected by CVE-2026-26128. Full Vulnerability Details & Analysis at DarkEye: 🔗 https://t.co/XJg0saA6G4 🔍 Identify Targets via ZoomEye: Filter: htt
@zoomeye_team
6 Jul 2026
28248 Impressions
76 Retweets
342 Likes
234 Bookmarks
5 Replies
0 Quotes
KerberosリフレクションバイパスCVE-2026-26128の概念実証（PoC）が公開される Kerberos Reflection Bypass CVE-2026-26128 Gets Public PoC Exploit #DailyCyberSecurity (Jul 6) https://t.co/CsKZ194b8u
@foxbook
6 Jul 2026
337 Impressions
0 Retweets
3 Likes
0 Bookmarks
0 Replies
0 Quotes
Synacktiv publicly disclosed a Kerberos reflection bypass, CVE-2026-26128, with PoC exploit code. It yields SYSTEM on most Windows builds. Patch now. #Kerberos #PoC #CVE #Windows https://t.co/g6hPHVNUXE
@Daily_CyberSec
6 Jul 2026
207 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
#Offensive_security Bypassing Windows (11 24H2/Server 2025) authentication reflection mitigations for SYSTEM shells Part 1 (CVE-2025-33073) https://t.co/noLSQbnN6f Part 2 (CVE-2026-26128) https://t.co/W73Z6ZLWtr // Authentication relay (or reflection) attacks will persist as long
@ksg93rd
3 May 2026
1248 Impressions
4 Retweets
24 Likes
16 Bookmarks
0 Replies
0 Quotes
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