by Kastro
Paper/Archive/CVE-2025-1016

CVE-2025-1016

Mozilla Firefox — Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 48.2.482 × 209.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory115.20CNA
Thunderbirdsee advisory128.7CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refmozilla.org/security/advisories/mfsa2025-09refmozilla.org/security/advisories/mfsa2025-10refmozilla.org/security/advisories/mfsa2025-11refbugzilla.mozilla.org/buglist.cgi?bug_id=1936601%2C1936844%2C1937694%2C1938469%2C1939583%2C1940994refmozilla.org/security/advisories/mfsa2025-07refmozilla.org/security/advisories/mfsa2025-08reflists.debian.org/debian-lts-announce/2025/02/msg00006.html