Security Resilience

CVE-2024-20700

Race Condition in Microsoft Windows 11 21H2 ≤ 10.0.22000.2713

Published
09 January 2024
Modified
17 June 2026
Patch / advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.040 90th percentile
Risk Priority 61 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2024-20700 is a high-severity Race Condition (CWE-362) vulnerability in Microsoft Windows 11 21H2. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 10% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-39 (Process Isolation) and SC-4 (Information in Shared System Resources) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Windows Hyper-V Remote Code Execution Vulnerability

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-36405Same product: Microsoft Windows 10 1809
CVE-2023-36698Same product: Microsoft Windows 10 1809
CVE-2025-54115Same product: Microsoft Windows 10 1809
CVE-2025-54919Same product: Microsoft Windows 10 1809
CVE-2024-38191Same product: Microsoft Windows 10 1809
CVE-2025-59193Same product: Microsoft Windows 10 1809
CVE-2024-38136Same product: Microsoft Windows 10 1809
CVE-2026-20866Same product: Microsoft Windows 10 1809
CVE-2026-20930Same product: Microsoft Windows 10 1809
CVE-2025-64658Same product: Microsoft Windows 10 1809

Affected Assets

microsoft
windows 10 1809
≤ 10.0.17763.5329
microsoft
windows 10 21h2
≤ 10.0.19044.3930
microsoft
windows 10 22h2
≤ 10.0.19045.3930
microsoft
windows 11 21h2
≤ 10.0.22000.2713 · ≤ 10.0.22000.2713
microsoft
windows 11 22h2
≤ 10.0.22621.3007 · ≤ 10.0.22621.3007
microsoft
windows 11 23h2
≤ 10.0.22631.3007
microsoft
windows server 2019
≤ 10.0.17763.5329
microsoft
windows server 2022
≤ 10.0.20348.2227
microsoft
windows server 2022 23h2
≤ 10.0.25398.643

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

Maintaining separate execution domains for each process structurally eliminates unintended concurrent access to the same shared resources.

Preventing unintended information transfer through shared system resources directly addresses the improper concurrent modification that defines a race condition.

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.

blocks

A.8.25 mandates secure SDLC practices (secure coding guidelines, security requirements, checkpoints, testing including code scans/penetration tests, developer training) that reach race conditions in concurrent code, but only as one slice of a broad requirement whose implementation scope and rigour are left to the organisation.

blocks

A.8.26 explicitly lists resilience against malicious attacks including SQL injections and input validation as application security requirements to identify/address; race conditions are a similar class of timing-based concurrency flaw that can be mitigated by requirements for proper synchronization/locking, but this is only one slice of the broad CWE-362 class (most instances arise in low-level shared-memory or TOCTOU scenarios not named here).

blocks

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.

finds

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

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-362, a class-level weakness, and none of its children carries one either.

References