What is CVE-2026-122979?

CVE-2026-122979 is a high-severity vulnerability in Microsoft Teams For Android, classified under Code Injection. CVSS score: 8.1/10. Published 2026-11-10.

How severe is CVE-2026-122979?

High severity. CVSS v3 base score is 8.1 out of 10.

RCE in Microsoft Teams For Android

CVE-2026-122979

Improper control of generation of code ('code injection') in Microsoft Teams for Android allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: RCE (Remote Code Execution)

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Teams For Android

Weakness classification (CWE)

CWE-94 — Code Injection

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-122979 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-122979?: CVE-2026-122979 is a high-severity vulnerability in Microsoft Teams For Android, classified under Code Injection. CVSS score: 8.1/10. Published 2026-11-10.
How severe is CVE-2026-122979?: High severity. CVSS v3 base score is 8.1 out of 10.