CVE-2026-25188

Name: CVE-2026-25188
Creator: NVD / NIST
Published: 2026-03-10T18:18:35.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2026-25188 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.55%

41.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10 1607	< 10.0.14393.8957
Microsoft	Windows 10 1809	< 10.0.17763.8511
Microsoft	Windows 10 21h2	< 10.0.19044.7058
Microsoft	Windows 10 22h2	< 10.0.19045.7058
Microsoft	Windows 11 23h2	< 10.0.22631.6783
Microsoft	Windows 11 24h2	< 10.0.26100.7979
Microsoft	Windows 11 25h2	< 10.0.26200.7979
Microsoft	Windows 11 26h1	< 10.0.28000.1719
Microsoft	Windows Server 2012	All versions
Microsoft	Windows Server 2012	r2
Microsoft	Windows Server 2016	< 10.0.14393.8957
Microsoft	Windows Server 2019	< 10.0.17763.8511
Microsoft	Windows Server 2022	< 10.0.20348.4830
Microsoft	Windows Server 2022 23h2	< 10.0.25398.2207
Microsoft	Windows Server 2025	< 10.0.26100.32463

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25188Vendor Advisory

Timeline

Published: Mar 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25188?

Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.

How severe is CVE-2026-25188?

CVE-2026-25188 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25188?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25188?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST