CVE-2025-49689: Microsoft Windows 10 Version 1507 · Integer Overflow or Wraparound
Affects Microsoft Windows 10 Version 1507Source CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 09:08 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 8 Jul 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | Affected
| Fixed in– |
AI-suggested
1. Restrict local access to systems running Windows 10 Version 1507, limiting user permissions and enforcing strict access controls to reduce the risk of exploitation. 2. Educate users to avoid opening or mounting untrusted or suspicious VHDX files, minimizing the likelihood of triggering the vulnerability. 3. Monitor system logs and security events for unusual activities related to VHDX operations or privilege escalation attempts. 4. Deploy application whitelisting and endpoint detection and response (EDR) solutions to detect and block malicious behavior targeting VHDX components. 5. Plan and execute an upgrade strategy to move affected systems to supported and patched Windows versions, as Windows 10 Version 1507 is outdated and no patches are currently available. 6. Stay informed on vendor advisories for any forthcoming patches or mitigations and apply them immediately upon release. 7. Implement network segmentation to isolate legacy systems and limit potential lateral movement by attackers exploiting this vulnerability.
Description
Integer overflow or wraparound in Virtual Hard Disk (VHDX) allows an unauthorized attacker to elevate privileges locally.