CVE-2023-37201

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-05 · updated 2026-06-17
Weakness: CWE-416

Description

An attacker could have triggered a use-after-free condition when creating a WebRTC connection over HTTPS. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.

Affected products

Debian Linux: 10.0, 11.0, 12.0
Mozilla Firefox: before 115.0 — fixed in 115.0
Mozilla Firefox ESR: before 102.13 — fixed in 102.13
Mozilla Thunderbird: before 102.13 — fixed in 102.13

How to fix

Upgrade to a fixed version: Mozilla Firefox 115.0; Mozilla Firefox ESR 102.13; Mozilla Thunderbird 102.13. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1826002
https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html
https://lists.debian.org/debian-lts-announce/2023/07/msg00015.html
https://www.debian.org/security/2023/dsa-5450
https://www.debian.org/security/2023/dsa-5451
https://www.mozilla.org/security/advisories/mfsa2023-22/
https://www.mozilla.org/security/advisories/mfsa2023-23/
https://www.mozilla.org/security/advisories/mfsa2023-24/
https://bugzilla.mozilla.org/show_bug.cgi?id=1826002
https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html
https://lists.debian.org/debian-lts-announce/2023/07/msg00015.html
https://www.debian.org/security/2023/dsa-5450

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