CVE-2025-59242: Microsoft Windows 10 Version 1507 · Heap-based Buffer Overflow
Affects Microsoft Windows 10 Version 1507Source CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | Affected
| Fixed in– |
AI-suggested
To mitigate CVE-2025-59242, organizations should prioritize upgrading affected systems from Windows 10 Version 1507 to a supported and patched Windows version, as no patches are currently available for this legacy build. If upgrading is not immediately feasible, consider applying any available security workarounds such as restricting local user permissions, disabling unnecessary services related to WinSock ancillary drivers, and enforcing strict application whitelisting to prevent execution of unauthorized code. Employ endpoint detection and response (EDR) solutions to monitor for suspicious local privilege escalation attempts. Regularly audit local user accounts and privileges to minimize the number of users with local access. Network segmentation can limit the impact of compromised systems. Additionally, maintain up-to-date backups to enable recovery in case of compromise. Organizations should monitor Microsoft advisories for forthcoming patches and apply them promptly once released. Finally, conduct targeted security awareness training to reduce the risk of initial local access by attackers.
Description
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.