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VulnerabilityPublished Updated

CVE-2025-50161: Microsoft Windows 10 Version 1507 · Heap-based Buffer Overflow

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 7.3 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1507Affected
  • =10.0.10240.0
Fixed in–

AI-suggested

1. Upgrade affected systems: The most effective mitigation is to upgrade from Windows 10 Version 1507 to a supported and patched version of Windows 10 or later, as this legacy version is no longer supported and lacks security updates. 2. Restrict local access: Limit the number of users with local access to affected systems, especially those with low privileges, to reduce the attack surface. 3. Apply principle of least privilege: Ensure users operate with the minimum necessary privileges to prevent exploitation from low-privileged accounts. 4. Monitor system behavior: Implement enhanced monitoring and alerting for suspicious activities indicative of privilege escalation attempts, such as unusual Win32K calls or memory corruption indicators. 5. Use application whitelisting: Restrict execution of unauthorized or untrusted applications that could trigger the vulnerability. 6. Employ endpoint protection: Utilize advanced endpoint detection and response (EDR) tools capable of detecting exploitation attempts targeting Win32K vulnerabilities. 7. Network segmentation: Isolate legacy systems from critical network segments to limit lateral movement if compromise occurs. 8. Follow vendor advisories: Continuously monitor Microsoft security advisories for any forthcoming patches or workarounds related to this vulnerability. 9. Conduct regular security assessments: Periodically audit legacy systems for compliance and vulnerability exposure to prioritize remediation efforts.

Description

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

References

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