CVE-2025-1012CWE-416

CVE-2025-1012

High · published February 4, 2025

CVSS v3.1

7.5

EPSS

Percentile

38.0

In the wild

Unconfirmed

What it is

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

The record

Technical detail

CVSS v3.1: 7.5 · HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.00452 · 38.0th percentile
Weakness: CWE-416 · Use After Free
Published: 2025-02-04T19:15Z

Affected products (5)

Product	Versions	Fixed in
mozilla/firefox	< 115.20.0	115.20.0
mozilla/firefox	< 135.0	135.0
mozilla/firefox	≥ 128.1.0, < 128.7.0	128.7.0
mozilla/thunderbird	< 135.0	135.0
mozilla/thunderbird	≥ 128.0.1, < 128.7.0	128.7.0

References (8)

https://bugzilla.mozilla.org/show_bug.cgi?id=1939710 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-07/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-08/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-09/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-10/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-11/ · [email protected]https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html · af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html · af854a3a-2127-422b-91ae-364da2661108

EPSS history

Timeline

04 FEB 13:58Z
Use-after-free during concurrent delazification
cvelistv5