critical
CVE-2025-14321
firefox: thunderbird: Use-after-free in the WebRTC: Signaling component
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Ubuntu (medium).
Description
Use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| alma 8 | firefox, thunderbird | 140.6.0-1.el8_10.alma.1 |
| alma 9 | firefox, firefox-x11, thunderbird | 140.6.0-1.el9_7.alma.1 |
| amazon linux 2 | thunderbird | 140.6.0-1.amzn2.0.1 |
| amazon linux 2023 | firefox, firefox-debuginfo, firefox-debugsource | 140.6.0-1.amzn2023.0.1 |
| chainguard | firefox, firefox-esr | 140.6-r0 |
| debian 11 | firefox-esr, thunderbird | 140.6.0esr-1~deb11u1 and 1 more |
| debian 12 | firefox-esr, thunderbird | 140.6.0esr-1~deb12u1 and 1 more |
| debian 13 | firefox-esr, thunderbird | 140.6.0esr-1~deb13u1 and 1 more |
| debian 14 | firefox-esr, thunderbird | 140.6.0esr-1 and 1 more |
| echo | firefox-esr, thunderbird | 140.6.0esr-1~deb12u1 and 1 more |
| Oracle Linux 7 | firefox | 140.6.0-1.0.1.el7_9 |
| Oracle Linux 8 | firefox, thunderbird | 140.6.0-1.0.1.el8_10 |
Show all 61 entries from 30 sources
| Source | Package | Fixed in |
|---|---|---|
| alma 8 | firefox | 140.6.0-1.el8_10.alma.1 |
| alma 8 | thunderbird | 140.6.0-1.el8_10.alma.1 |
| alma 9 | firefox | 140.6.0-1.el9_7.alma.1 |
| alma 9 | firefox-x11 | 140.6.0-1.el9_7.alma.1 |
| alma 9 | thunderbird | 140.6.0-1.el9_7.alma.1 |
| amazon linux 2 | thunderbird | 140.6.0-1.amzn2.0.1 |
| amazon linux 2023 | firefox | 140.6.0-1.amzn2023.0.1 |
| amazon linux 2023 | firefox-debuginfo | 140.6.0-1.amzn2023.0.1 |
| amazon linux 2023 | firefox-debugsource | 140.6.0-1.amzn2023.0.1 |
| chainguard | firefox | 140.6-r0 |
| chainguard | firefox-esr | 140.6-r0 |
| debian 11 | firefox-esr | 140.6.0esr-1~deb11u1 |
| debian 11 | thunderbird | 1:140.6.0esr-1~deb11u1 |
| debian 12 | firefox-esr | 140.6.0esr-1~deb12u1 |
| debian 12 | thunderbird | 1:140.6.0esr-1~deb12u1 |
| debian 13 | firefox-esr | 140.6.0esr-1~deb13u1 |
| debian 13 | thunderbird | 1:140.6.0esr-1~deb13u1 |
| debian 14 | firefox-esr | 140.6.0esr-1 |
| debian 14 | thunderbird | 1:140.6.0esr-1 |
| echo | firefox-esr | 140.6.0esr-1~deb12u1 |
| echo | thunderbird | 1:140.6.0esr-1~deb12u1 |
| Oracle Linux 7 | firefox | 140.6.0-1.0.1.el7_9 |
| Oracle Linux 8 | firefox | 140.6.0-1.0.1.el8_10 |
| Oracle Linux 8 | thunderbird | 140.6.0-1.0.1.el8_10 |
| Oracle Linux 9 | firefox | 140.6.0-1.0.1.el9_7 |
| Oracle Linux 9 | firefox-x11 | 140.6.0-1.0.1.el9_7 |
| Oracle Linux 9 | thunderbird | 140.6.0-1.0.1.el9_7 |
| rapidfort alpine 3.20 | firefox | 142.0-r0 |
| rapidfort alpine 3.20 | firefox-esr | no fix listed |
| rapidfort alpine 3.20 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.21 | firefox | 142.0-r0 |
| rapidfort alpine 3.21 | firefox-esr | no fix listed |
| rapidfort alpine 3.21 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.22 | firefox-esr | no fix listed |
| rapidfort alpine 3.22 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.23 | firefox-esr | no fix listed |
| rapidfort alpine 3.23 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.24 | firefox-esr | no fix listed |
| rapidfort amazon linux 2023 | firefox | 140.6.0-1.amzn2023.0.1 |
| rapidfort debian 12 | firefox-esr | 0:140.6.0esr-1, 0:140.6.0esr-1~deb11u1, 0:140.6.0esr-1~deb12u1, 0:140.6.0esr-1~deb13u1 |
| rapidfort debian 12 | thunderbird | 0:140.6.0esr-1~deb11u1, 0:140.6.0esr-1~deb13u1, 1:140.6.0esr-1, 1:140.6.0esr-1~deb12u1 |
| rapidfort debian 13 | firefox-esr | 0:140.6.0esr-1, 0:140.6.0esr-1~deb11u1, 0:140.6.0esr-1~deb12u1, 0:140.6.0esr-1~deb13u1 |
| rapidfort debian 13 | thunderbird | 0:140.6.0esr-1~deb11u1, 0:140.6.0esr-1~deb13u1, 1:140.6.0esr-1, 1:140.6.0esr-1~deb12u1 |
| rapidfort fedora 43 | thunderbird | 145.0-1.fc43 |
| rapidfort fedora 43 | thunderbird-librnp-rnp | 145.0-1.fc43 |
| rapidfort Oracle Linux 10 | firefox | 0:140.6.0-1.0.1.el10_1 |
| rapidfort Oracle Linux 10 | thunderbird | 0:140.6.0-1.0.1.el10_1 |
| rapidfort Oracle Linux 9 | firefox | 0:140.6.0-1.0.1.el9_7 |
| rapidfort Oracle Linux 9 | firefox-x11 | 0:140.6.0-1.0.1.el9_7 |
| rapidfort Oracle Linux 9 | thunderbird | 0:140.6.0-1.0.1.el9_7 |
| Red Hat | firefox | no fix listed |
| Red Hat | thunderbird | no fix listed |
| rocky 10 | firefox | 140.6.0-1.el10_1 |
| rocky 10 | thunderbird | 140.6.0-1.el10_1 |
| rocky 8 | firefox | 140.6.0-1.el8_10 |
| rocky 8 | thunderbird | 140.6.0-1.el8_10 |
| rocky 9 | firefox | 140.6.0-1.el9_7 |
| rocky 9 | firefox-x11 | 140.6.0-1.el9_7 |
| rocky 9 | thunderbird | 140.6.0-1.el9_7 |
| ubuntu 22.04 | thunderbird | 1:140.7.1+build1-0ubuntu0.22.04.1 |
| wolfi | firefox | 140.6-r0 |
References
- https://access.redhat.com/errata/RHSA-2025:23856
- https://access.redhat.com/security/cve/CVE-2025-14321
- https://bugzilla.mozilla.org/show_bug.cgi?id=1992760
- https://bugzilla.redhat.com/2420502
- https://bugzilla.redhat.com/2420503
- https://bugzilla.redhat.com/2420504
- https://bugzilla.redhat.com/2420506
- https://bugzilla.redhat.com/2420508
All 49 references
- https://bugzilla.redhat.com/2420509
- https://bugzilla.redhat.com/2420512
- https://bugzilla.redhat.com/2420513
- https://bugzilla.redhat.com/2420516
- https://bugzilla.redhat.com/2420517
- https://bugzilla.redhat.com/show_bug.cgi?id=2420502
- https://bugzilla.redhat.com/show_bug.cgi?id=2420503
- https://bugzilla.redhat.com/show_bug.cgi?id=2420504
- https://bugzilla.redhat.com/show_bug.cgi?id=2420506
- https://bugzilla.redhat.com/show_bug.cgi?id=2420508
- https://bugzilla.redhat.com/show_bug.cgi?id=2420509
- https://bugzilla.redhat.com/show_bug.cgi?id=2420512
- https://bugzilla.redhat.com/show_bug.cgi?id=2420513
- https://bugzilla.redhat.com/show_bug.cgi?id=2420516
- https://bugzilla.redhat.com/show_bug.cgi?id=2420517
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14321
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14322
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14323
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14324
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14325
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14328
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14329
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14330
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14331
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-14333
- https://errata.almalinux.org/9/ALSA-2025-23856.html
- https://errata.rockylinux.org/RLSA-2025:23856
- https://linux.oracle.com/cve/CVE-2025-14321.html
- https://linux.oracle.com/errata/ELSA-2026-0026.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-14321
- https://ubuntu.com/security/notices/USN-7991-1
- https://www.cve.org/CVERecord?id=CVE-2025-14321
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-92/#CVE-2025-14321
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-94/#CVE-2025-14321
- https://www.mozilla.org/security/advisories/mfsa2025-92/
- https://www.mozilla.org/security/advisories/mfsa2025-94/
- https://www.mozilla.org/security/advisories/mfsa2025-94/#CVE-2025-14321
- https://www.mozilla.org/security/advisories/mfsa2025-95/
- https://www.mozilla.org/security/advisories/mfsa2025-96/
- https://www.mozilla.org/security/advisories/mfsa2025-96/#CVE-2025-14321