How severe is CVE-2024-42004?

CVE-2024-42004 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-42004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42004?

CVE-2024-42004 affects Microsoft Teams. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-42004 have an EU (EUVD) identifier?

Yes. CVE-2024-42004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39894.

When was CVE-2024-42004 published?

CVE-2024-42004 was published on 2024-12-18 and last updated on 2026-06-17.

CVE-2024-42004

CVE-2024-42004 is a high-severity vulnerability in Microsoft Teams with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39894
Weakness: CWE-347
Affected product: Microsoft Teams
Published: 2024-12-18
Last modified: 2026-06-17

Description

A library injection vulnerability exists in 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.

Frequently asked questions

What is CVE-2024-42004?: A library injection vulnerability exists in 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.
How severe is CVE-2024-42004?: CVE-2024-42004 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-42004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42004?: CVE-2024-42004 affects Microsoft Teams. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-42004 have an EU (EUVD) identifier?: Yes. CVE-2024-42004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39894.
When was CVE-2024-42004 published?: CVE-2024-42004 was published on 2024-12-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:teams:24046.2813.2770.1094:*:*:*:*:macos:*:*

More vulnerabilities in Microsoft Teams

CVE-2026-33823 — Critical (CVSS 9.6): Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
CVE-2023-4863 — High (CVSS 8.8): Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to…
CVE-2023-29330 — High (CVSS 8.8): Microsoft Teams Remote Code Execution Vulnerability
CVE-2023-29328 — High (CVSS 8.8): Microsoft Teams Remote Code Execution Vulnerability
CVE-2026-21535 — High (CVSS 8.2): Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.
CVE-2026-42835 — High (CVSS 8.1): Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Teams…

All CVEs affecting Microsoft Teams →

Other CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities

CVE-2026-48558 — Critical (CVSS 10.0): SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the…
CVE-2023-25574 — Critical (CVSS 10.0): `jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI).…
CVE-2024-45409 — Critical (CVSS 10.0): The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <=…
CVE-2024-32962 — Critical (CVSS 10.0): xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default…
CVE-2022-24884 — Critical (CVSS 10.0): ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). `ecdsa_verify_[prepare_]legacy()`…
CVE-2021-33885 — Critical (CVSS 10.0): An Insufficient Verification of Data Authenticity vulnerability in B. Braun SpaceCom2 prior to 012U000062 allows a…

Browse all CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities →