Cyber Resilience

CVE-2022-26904

Race Condition in Microsoft Windows Server 2008 r2

CISA KEVActive ExploitationEUVD ExploitedRace Condition
Published
15 April 2022
Modified
30 October 2025
KEV Added
25 April 2022
Patch / advisory
CVSS Score v3.1 7.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.098 95th percentile
Risk Priority 78 floored blend · peak EPSS

Summary

CVE-2022-26904 is a high-severity Race Condition (CWE-362) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.0 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); 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-2022-26904 is an elevation-of-privilege vulnerability in the Windows User Profile Service stemming from a race condition (CWE-362). The flaw affects multiple versions of Windows and carries a CVSS 3.1 score of 7.0, reflecting local attack vector, high attack complexity, low privileges required, and high impact on confidentiality, integrity, and availability.

A local attacker with a low-privileged account can exploit the race condition to obtain SYSTEM-level privileges on an affected system. Successful exploitation grants the attacker full control over the target machine, enabling arbitrary code execution, credential theft, and persistence.

Microsoft’s security update guide recommends installing the patches released on April 12, 2022, which address the underlying race condition in the User Profile Service. The vulnerability is also listed in CISA’s Known Exploited Vulnerabilities catalog, confirming that federal agencies must apply mitigations according to the published timelines.

EPSS scores for the CVE rose from low values after disclosure to a peak of 0.2831 in December 2025 before receding to the current 0.2300, indicating renewed exploitation interest well after the initial release.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Windows User Profile Service Elevation of Privilege Vulnerability

CWE(s)
KEV Date Added
25 April 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-36884Same product: Microsoft Windows 10 1507both on KEV
CVE-2023-21712Same product: Microsoft Windows 10 1607
CVE-2023-28232Same product: Microsoft Windows 10 1507
CVE-2022-24521Same product: Microsoft Windows 10 1507both on KEV
CVE-2022-21919Same product: Microsoft Windows 10 1507both on KEV
CVE-2022-21999Same product: Microsoft Windows 10 1507both on KEV
CVE-2022-26925Same product: Microsoft Windows 10 1507both on KEV
CVE-2022-22718Same product: Microsoft Windows 10 1507both on KEV
CVE-2023-35361Same product: Microsoft Windows 10 1507
CVE-2022-37969Same product: Microsoft Windows 10 1507both on KEV

Affected Assets

microsoft
windows 10 1507
≤ 10.0.10240.19265
microsoft
windows 10 1607
≤ 10.0.14393.5066
microsoft
windows 10 1809
≤ 10.0.17763.2803
microsoft
windows 10 1909
≤ 10.0.18363.2212
microsoft
windows 10 20h2
≤ 10.0.19042.1645
microsoft
windows 10 21h1
≤ 10.0.19043.1645
microsoft
windows 10 21h2
≤ 10.0.19044.1645
microsoft
windows 11 21h2
≤ 10.0.22000.613
microsoft
windows 7
all versions
microsoft
windows 8.1
all versions
+7 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V10.4.2
  • V10.4.5
  • V15.1.3
  • V15.4.1

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.

addresses: CWE-362

Accurate timestamps from internal clocks enable detection of race conditions by providing reliable event ordering in audit logs.

addresses: CWE-362

Coordination of concurrent security activities reduces the probability that shared resources will be accessed simultaneously without proper synchronization.

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.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require proper synchronization primitives and concurrency testing that prevent race conditions.

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.

finds

Security testing can detect race conditions, but does not prevent them at design or coding time.

prevents

Secure SDLC mandates concurrency controls and synchronization primitives that directly prevent race conditions.

prevents

Application security requirements can specify thread-safety and locking rules, but do not prescribe implementation details.

prevents

Secure architecture principles require proper synchronization and resource isolation, addressing the root cause of CWE-362.

prevents

Secure coding standards explicitly forbid unsafe concurrent access patterns and mandate atomic operations or locks.

none

Change management reduces introduction of concurrency bugs during updates, yet does not address the weakness itself.

References