CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-42968: Windows Telephony Server Information Disclosure Vulnerability

mediumCVSS 5.5CVE-2026-42968
Out-of-bounds read in Windows Telephony Service allows an authorized attacker to disclose information locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Telephony ServiceInformation disclosure
What
An out-of-bounds read in Windows Telephony Service allows an authorized attacker to disclose information locally.
Who is affected
Users of Windows Telephony Service are affected.
Urgency
Medium urgency due to the potential for information disclosure, though no active exploitation is reported.
Action
Apply patches as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Windows Telephony Service

Get an email when a new Windows Telephony Service advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 5.5
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42968

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-42968coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Telephony Server

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center