Incorrect boundary conditions in the WebRTC component (Mozilla Firefox)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.31 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Weaknesses (CWE)
- CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787 — Out-of-bounds Write
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2027501
- https://www.mozilla.org/security/advisories/mfsa2026-30/
- https://www.mozilla.org/security/advisories/mfsa2026-32/
- https://www.mozilla.org/security/advisories/mfsa2026-33/
- https://www.mozilla.org/security/advisories/mfsa2026-34/
- https://access.redhat.com/security/cve/CVE-2026-6753
- https://bugzilla.redhat.com/show_bug.cgi?id=2460092
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6753.json
- https://access.redhat.com/errata/RHSA-2026:19704
- https://access.redhat.com/errata/RHSA-2026:17690
- https://access.redhat.com/errata/RHSA-2026:19463
- https://access.redhat.com/errata/RHSA-2026:10767
- https://access.redhat.com/errata/RHSA-2026:12285
- https://access.redhat.com/errata/RHSA-2026:19041
- https://access.redhat.com/errata/RHSA-2026:19131
- https://access.redhat.com/errata/RHSA-2026:10766
- https://access.redhat.com/errata/RHSA-2026:13537
- https://access.redhat.com/errata/RHSA-2026:19655
- https://access.redhat.com/errata/RHSA-2026:19465
- https://access.redhat.com/errata/RHSA-2026:19542
- https://access.redhat.com/errata/RHSA-2026:19466
- https://access.redhat.com/errata/RHSA-2026:17477
- https://access.redhat.com/errata/RHSA-2026:19467
- https://access.redhat.com/errata/RHSA-2026:17687
- https://access.redhat.com/errata/RHSA-2026:19468
- https://access.redhat.com/errata/RHSA-2026:17689
- https://access.redhat.com/errata/RHSA-2026:19461
- https://access.redhat.com/errata/RHSA-2026:19464
- https://access.redhat.com/errata/RHSA-2026:19469
- https://access.redhat.com/errata/RHSA-2026:17688
- https://access.redhat.com/errata/RHSA-2026:19462
- https://access.redhat.com/errata/RHSA-2026:10757
- https://access.redhat.com/errata/RHSA-2026:15892
- https://access.redhat.com/errata/RHSA-2026:19201
- https://access.redhat.com/errata/RHSA-2026:19348
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
European references
- ENISA EUVD · EUVD-2026-24094
- GCVE · GCVE-0-2026-6753
CERT-FR advisories
- CERTFR-2026-AVI-0480 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*< 140.10.0cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*< 150.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*≥ 140.0 < 140.10.0
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | unaffected 140.10 ≤ 140.* ; unaffected 150 ≤ * |
| Mozilla · Thunderbird | unaffected 140.10 ≤ 140.* ; unaffected 150 ≤ * |
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 |