Patch tracker / CVE reference / CVE-2025-29971

CVE-2025-29971

CVE-2025-29971 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 7.5 (High). Its EPSS score puts the probability of exploitation in the next 30 days at 67%. Microsoft has shipped the fix: deploy one of the 3 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.

Risk summary

High

7.5

CVSS v3

67%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 67%. CVSS 7.5 (High).

This CVE is among the top 10% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2025-29971

Web Threat Defense, WTD.sys, is a Windows 11 security driver, and this denial of service flaw in it is rated High Severity at CVSS 8.8 with a 58 percent exploit probability across Windows 11 22H2 and 23H2. A crashable kernel security driver is doubly interesting to attackers: the crash itself blue-screens the machine, and killing a defense component can be step one of a larger intrusion. The flaw is exclusive to the Windows 11 client line in this listing.

Do this: Push the update to Windows 11 22H2 and 23H2 endpoints and investigate any cluster of WTD.sys-attributed crashes as potentially hostile.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-29971

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin assessing a vulnerability. Facts for CVE-2025-29971 (source: https://senserva.com/cve/CVE-2025-29971.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- CVE-2025-29971: Microsoft vulnerability, Microsoft rating Important, CVSS 7.5 (High)
- EPSS 30-day exploitation probability: 67%
- Actively exploited (CISA KEV): no
- Fixed by: KB5058405, KB5058411, KB5061258
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch this cycle

Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 67%).

Fixed by KB5058405 and 2 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch in this maintenance window; do not let it slip to the next one.

Official patch(es) for CVE-2025-29971

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5058405, KB5058411, KB5061258 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Apply the Microsoft security updates below to fix CVE-2025-29971. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.

KB5058405 KB5058411 KB5061258

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.

CVE-2025-29971

Risk summary

Official patch(es) for CVE-2025-29971

Scope and sources