CVE-2026-42968

CVE-2026-42968

Out-of-bounds read in Windows Telephony Service allows an authorized attacker to disclose information locally.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-42968?: CVE-2026-42968 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-06-09.
How severe is CVE-2026-42968?: Medium severity. CVSS v3 base score is 5.5 out of 10.