Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10 (Mozilla Firefox)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.51 % · percentile 43 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
Memory safety bugs present in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9. 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 138, Firefox ESR 128.10, Thunderbird 138, and Thunderbird 128.10.
Weaknesses (CWE)
- CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1951161%2C1952105
- https://www.mozilla.org/security/advisories/mfsa2025-28/
- https://www.mozilla.org/security/advisories/mfsa2025-29/
- https://www.mozilla.org/security/advisories/mfsa2025-31/
- https://www.mozilla.org/security/advisories/mfsa2025-32/
- https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2025-12641
- GCVE · GCVE-0-2025-4091
CERT-FR advisories
- CERTFR-2025-AVI-0756 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0361 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0358 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*< 128.10cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*< 138.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*< 128.10.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*< 138.0
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | unaffected 128.10 ≤ 128.* ; unaffected 138 ≤ * |
| Mozilla · Thunderbird | unaffected 128.10 ≤ 128.* ; unaffected 138 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |