CVE-2025-21299
Microsoft Windows 10 1507 ≤ 10.0.10240.20890
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2025-21299 is a high-severity Insecure Storage of Sensitive Information (CWE-922) vulnerability in Microsoft Windows 10 1507. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 17% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-21299 is a Windows Kerberos Security Feature Bypass Vulnerability affecting the Kerberos authentication component in Microsoft Windows operating systems. Published on 2025-01-14, it carries a CVSS v3.1 base score of 7.1 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) and is associated with CWE-922 (Omission of Security-relevant Information) and NVD-CWE-noinfo.
A local attacker with low privileges can exploit this vulnerability through low-complexity means without user interaction. Exploitation enables high-impact confidentiality and integrity violations, allowing bypass of Kerberos security features while maintaining unchanged scope and no availability disruption.
Microsoft's Security Response Center provides an update guide with vulnerability details and mitigation recommendations at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21299.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-2364
Vulnerability Data
Windows Kerberos Security Feature Bypass Vulnerability
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforces approved authorizations for logical access to stored information, directly stopping unauthorized read/write.
Requires protection of confidentiality/integrity for information at rest, directly addressing insecure storage.
Limits privileges so only authorized accesses to sensitive stored data are permitted.
Associates security attributes with information to support proper access decisions on storage.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-922, a class-level weakness. Rules are authored against its narrower children: CWE-312.