CVE-2022-21882
Memory Safety in Microsoft Windows 10 1809 ≤ 10.0.17763.2452
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2022-21882 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 7.0 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 0.9% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
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-2022-21882 is a Win32k elevation-of-privilege vulnerability in the Windows kernel-mode driver that implements the Win32 subsystem. The flaw is an out-of-bounds write (CWE-787) that can be triggered locally, carrying a CVSS 3.1 score of 7.0 under the vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
An attacker who already possesses a low-privileged local account can exploit the condition to obtain SYSTEM-level privileges on an affected Windows system. Public exploit code demonstrating offset confusion in the ConsoleControl path has been published, confirming that the vulnerability can be reached without user interaction once local access is obtained.
Microsoft security advisories direct administrators to apply the patches released in the January 2022 Patch Tuesday cycle; the updates are available through Windows Update and the Microsoft Update Catalog. The vulnerability is also listed in CISA’s Known Exploited Vulnerabilities catalog, indicating confirmed in-the-wild exploitation.
EPSS scores have remained elevated, with a current value of 0.8914 and a recorded peak of 0.9045.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27038
Vulnerability Data
Win32k Elevation of Privilege Vulnerability
- CWE(s)
- KEV Date Added
- 04 February 2022
Related Threats
Threat-Actor AttributionAI
MITRE ATT&CK Enterprise Techniques
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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.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.
Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.
Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.