CVE-2025-54109: Microsoft Windows 10 Version 1507 · Type Confusion
Affects Microsoft Windows 10 Version 1507Source CVE Database V5
Not known to be exploited · CVSS 6.7 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 9 Sep 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
- Upgrade affected systems from Windows 10 Version 1507 to a supported and fully patched version of Windows 10 or later, as this is the most effective mitigation.
- If upgrading is not immediately possible, restrict local access to affected systems by enforcing strict access controls and limiting administrative privileges to trusted personnel only.
- Implement application whitelisting and endpoint protection solutions that can detect and block suspicious activities related to privilege escalation attempts targeting the firewall service.
- Monitor system and security logs for unusual behavior or privilege escalation indicators, particularly related to the Windows Defender Firewall Service.
- Disable or restrict unnecessary services and firewall rules that could be exploited in conjunction with this vulnerability.
- Employ network segmentation to limit the impact of compromised systems and reduce lateral movement opportunities.
- Stay informed on vendor advisories for any forthcoming patches or updates addressing this vulnerability and apply them promptly once available.
- Conduct regular security audits and vulnerability assessments focusing on legacy systems to identify and remediate similar risks proactively.
Description
Access of resource using incompatible type ('type confusion') in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.