AI description
CVE-2026-25177 is a privilege escalation vulnerability found within Microsoft Active Directory Domain Services (AD DS). This flaw stems from an improper restriction of names for files and other resources, categorized under CWE-641. An authorized attacker with low-privilege network access can exploit this vulnerability to elevate their privileges over the network. Exploitation of CVE-2026-25177 can lead to an attacker gaining unauthorized access to sensitive domain resources and administrative capabilities, potentially achieving SYSTEM-level control over affected Windows systems. This vulnerability affects a wide range of Windows operating systems and server editions, making it relevant to environments utilizing Active Directory infrastructure.
- Description
- Improper restriction of names for files and other resources in Active Directory Domain Services allows an authorized attacker to elevate privileges over a network.
- 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
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- secure@microsoft.com
- CWE-641
- Hype score
- Not currently trending
Exploit demo on Linux and Patch Analysis of ResetNightmare (CVE-2026-27912) and KerberLoss (CVE-2026-25177), two Active Directory vulnerabilities discovered by Shai Laron from @SemperisTech allowing Full Domain Takeover and more. https://t.co/Zx4y9h3ywc
@rouge_cravate
10 Aug 2026
687 Impressions
4 Retweets
4 Likes
2 Bookmarks
0 Replies
0 Quotes
KerberLoss (CVE-2026-25177) + ResetNightmare (CVE-2026-27912): two Kerberos logic flaws. Low-priv user → any account → domain admin → full domain takeover. Presented today at Black Hat USA by Semperis. https://t.co/QOdioHnQto #infosec #ActiveDirectory
@Ronin66Official
9 Aug 2026
60 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
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