CVE-2025-29811
Published: 08 April 2025
Summary
CVE-2025-29811 is a high-severity Improper Input Validation (CWE-20) vulnerability in Microsoft Windows 11 22H2. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 20.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-29811 stems from improper input validation in the Windows Mobile Broadband component. The flaw is tracked under CWE-20 along with related memory-safety issues CWE-122 and CWE-125, carries a CVSS 3.1 base score of 7.8, and permits local privilege escalation on affected Windows systems.
An attacker who already possesses a local authorized account can exploit the vulnerability without user interaction to obtain higher privileges on the host, resulting in full control over confidentiality, integrity, and availability of the system.
The official Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29811 supplies remediation guidance and patch information. The associated EPSS score has remained flat at 0.0118 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10119
Vulnerability details
Improper input validation in Windows Mobile Broadband allows an authorized attacker to elevate privileges locally.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Directly implements checks on information inputs to reject invalid data before processing.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.