Large branch table could lead to truncated instruction (Mozilla Firefox)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.58 % · percentile 48 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
Weaknesses (CWE)
- CWE-1332 — Improper Handling of Faults that Lead to Instruction Skips
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1971581
- https://www.mozilla.org/security/advisories/mfsa2025-56/
- https://www.mozilla.org/security/advisories/mfsa2025-57/
- https://www.mozilla.org/security/advisories/mfsa2025-58/
- https://www.mozilla.org/security/advisories/mfsa2025-59/
- https://www.mozilla.org/security/advisories/mfsa2025-61/
- https://www.mozilla.org/security/advisories/mfsa2025-62/
- https://www.mozilla.org/security/advisories/mfsa2025-63/
- https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2025-22371
- GCVE · GCVE-0-2025-8028
CERT-FR advisories
- CERTFR-2025-AVI-0756 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0615 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*< 115.26.0cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*< 141.0cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*≥ 128.0 < 128.13.0cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*≥ 140.0 < 140.1.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*< 128.13.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*< 141.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*≥ 140.0 < 140.1.0
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | unaffected 115.26 ≤ 115.* ; unaffected 128.13 ≤ 128.* ; unaffected 140.1 ≤ 140.* ; unaffected 141 ≤ * |
| Mozilla · Thunderbird | unaffected 128.13 ≤ 128.* ; unaffected 140.1 ≤ 140.* ; unaffected 141 ≤ * |
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 |