What is CVE-2024-41138?

CVE-2024-41138 is a high-severity vulnerability in Microsoft Teams, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2024-12-18.

How severe is CVE-2024-41138?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Microsoft Teams

CVE-2024-41138

A library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject a library and start the program to trigger this vulnerability and then make use of the vulnerable application's permissions.

Published 2024-12-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Microsoft Teams — versions 24046.2813.2770.1094
Microsoft Teams (Work Or School) — versions 24046.2812.2722.8193 for macOS

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

talosintelligence.com/vulnerability_reports/TALOS-2024-1991 (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-41138?: CVE-2024-41138 is a high-severity vulnerability in Microsoft Teams, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2024-12-18.
How severe is CVE-2024-41138?: High severity. CVSS v3 base score is 7.1 out of 10.