CVE-2021-28310
Memory Safety in Microsoft Windows 10 1803
Raw vector
CVSS:3.1/AV:L/AC:L/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-2021-28310 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Microsoft Windows 10 1803. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
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-2021-28310 is a Win32k Elevation of Privilege Vulnerability affecting the Win32k component of Windows. It carries a CVSS 3.1 score of 7.8 and is associated with CWE-787, indicating an out-of-bounds write condition that can be triggered under local attack conditions.
An authenticated local attacker with low privileges can exploit the flaw without user interaction to elevate privileges on the affected system, resulting in full compromise of confidentiality, integrity, and availability within the local security boundary.
Microsoft has published official security guidance addressing the issue through its advisory portal, and the vulnerability appears in CISA's catalog of known exploited vulnerabilities, confirming observed in-the-wild exploitation activity.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-14995
Vulnerability Data
Win32k Elevation of Privilege Vulnerability
- CWE(s)
- KEV Date Added
- 03 November 2021
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
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.