CVE-2025-29971
Web Threat Defense (WTD.sys) Denial of Service Vulnerability
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny service over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Web Threat Defense (WTD.sys) Denial of Service Vulnerability
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny service over a network.
- Record
CVE-2025-29971- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2025-14466
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny service over a network.
- Record
EUVD-2025-14466- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-57q8-vxgg-mfqw
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny...
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny service over a network.
- Record
GHSA-57q8-vxgg-mfqw- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
Out-of-bounds read in Web Threat Defense (WTD.sys) allows an unauthorized attacker to deny service over a network.
- Record
CVE-2025-29971- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-29971 is a high vulnerability (CVSS 7.5) in Microsoft Windows 11 Version 22h2, published May 13, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 68.1%, the 99th percentile. No source names a fixed version.