medium 6.1

CVE-2025-13013 json

Mitigation bypass in the DOM: Core & HTML component

published 2025-11-11 11 mo ago modified 2026-10-23 16 d ago also EUVD-2025-84336

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Patch / fix

fixed in 2 distros 7

mozilla firefox 115.30, 140.5, 145
mozilla firefox_esr 115.30, 140.5, 145

debian ubuntu red hat suse opensuse almalinux rocky linux

firefox-esr Debian 12 140.5.0esr-1~deb12u1
firefox-esr Debian 13 140.5.0esr-1~deb13u1
firefox-esr Debian 14 140.5.0esr-1
thunderbird Debian 12 1:140.5.0esr-1~deb12u1
thunderbird Debian 13 1:140.5.0esr-1~deb13u1
thunderbird Debian 14 1:140.5.0esr-1

debian advisories DEBIAN-CVE-2025-13013

thunderbird Ubuntu 22.04 LTS 1:140.7.1+build1-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2025-13013

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

firefox RHEL 8 140.5.0-1.el8_10
thunderbird RHEL 8 140.5.0-2.el8_10
thunderbird RHEL 10.1 140.5.0-2.el10_1
thunderbird RHEL 9 140.5.0-1.el9_7
firefox RHEL 10.1 140.5.0-2.el10_1
firefox RHEL 9 140.5.0-1.el9_7
firefox-x11 RHEL 9 140.5.0-1.el9_7
thunderbird RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 140.5.0-1.el8_6

red hat advisories RHSA-2025:22883 RHSA-2025:22882 RHSA-2025:22792 RHSA-2025:22791 RHSA-2025:22451 RHSA-2025:22449

MozillaThunderbird SLE Workstation Extension 15 SP7, SLE Workstation Extension 15 SP6, SLE Module for Package Hub 15 SP7 +2 more 140.5.0-150200.8.245.1
MozillaFirefox SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +12 more 140.5.0-150200.152.210.1
MozillaFirefox SLES for SAP applications 16.0, SLES 16.0 140.5.0-160000.1.1
MozillaFirefox SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 140.5.0-112.289.1

suse advisories SUSE-SU-2025:4195-1 SUSE-SU-2025:4174-1 SUSE-SU-2025:4173-1 SUSE-SU-2025:21021-1

firefox-esr openSUSE Tumbleweed 153.0-1.1
MozillaThunderbird openSUSE Leap 16.0 140.5.0-bp160.1.1
MozillaFirefox openSUSE Leap 16.0 140.5.0-160000.1.1
MozillaThunderbird openSUSE Tumbleweed 140.5.0-1.1
MozillaFirefox openSUSE Tumbleweed 145.0-1.1

opensuse advisories openSUSE-SU-2026:11373-1 openSUSE-SU-2026:20002-1 openSUSE-SU-2025:20065-1 openSUSE-SU-2025:15738-1 openSUSE-SU-2025:15735-1

firefox AlmaLinux 8 140.5.0-1.el8_10.alma.1
thunderbird AlmaLinux 10 140.5.0-2.el10_1
thunderbird AlmaLinux 8 140.5.0-2.el8_10.alma.1
firefox AlmaLinux 9 140.5.0-1.el9_7.alma.1
firefox-x11 AlmaLinux 9 140.5.0-1.el9_7.alma.1
firefox AlmaLinux 10 140.5.0-2.el10_1

almalinux advisories ALSA-2025:22363 ALSA-2025:21843 ALSA-2025:21881 ALSA-2025:21280 ALSA-2025:21281

firefox Rocky Linux 8 140.5.0-1.el8_10
firefox Rocky Linux 10 140.5.0-2.el10_1
thunderbird Rocky Linux 10 140.5.0-2.el10_1
firefox Rocky Linux 9 140.5.0-1.el9_7
thunderbird Rocky Linux 8 140.5.0-2.el8_10

rocky linux advisories RLSA-2025:22363 RLSA-2025:21281 RLSA-2025:21843 RLSA-2025:21280 RLSA-2025:21881

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-13013 updated 2026-11-07 cvss 6.1

firefox: thunderbird: Mitigation bypass in the DOM: Core & HTML component

Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 thunderbird
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux 10 firefox-flatpak, thunderbird-flatpak
affected: no fix available
Red Hat Enterprise Linux AppStream (v. 8) firefox 140.5.0-1.el8_10, thunderbird 140.5.0-2.el8_10
fixed: vendor fix RHSA-2025:22363
Red Hat Enterprise Linux AppStream (v. 9) firefox 140.5.0-1.el9_7, firefox-x11 140.5.0-1.el9_7, thunderbird 140.5.0-1.el9_7
fixed: vendor fix RHSA-2025:21280
Red Hat Enterprise Linux AppStream (v. 10) firefox 140.5.0-2.el10_1, thunderbird 140.5.0-2.el10_1
fixed: vendor fix RHSA-2025:21281
Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox 140.5.0-1.el8_2, thunderbird 140.5.0-1.el8_2
fixed: vendor fix RHSA-2025:22369
Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox 140.5.0-1.el8_4, thunderbird 140.5.0-1.el8_4
fixed: vendor fix RHSA-2025:22367
Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox 140.5.0-1.el8_6, thunderbird 140.5.0-1.el8_6 Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox 140.5.0-1.el8_6, thunderbird 140.5.0-1.el8_6
fixed: vendor fix RHSA-2025:22368

show 10 more

Red Hat Enterprise Linux AppStream E4S (v.8.8) firefox 140.5.0-1.el8_8, thunderbird 140.5.0-1.el8_8
fixed: vendor fix RHSA-2025:22372
Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox 140.5.0-1.el9_0, thunderbird 140.5.0-1.el9_0
fixed: vendor fix RHSA-2025:22373
Red Hat Enterprise Linux AppStream E4S (v.9.2) firefox 140.5.0-1.el9_2, firefox-x11 140.5.0-1.el9_2, thunderbird 140.5.0-1.el9_2
fixed: vendor fix RHSA-2025:22375
Red Hat Enterprise Linux AppStream EUS (v. 10.0) firefox 140.5.0-2.el10_0, thunderbird 140.5.0-1.el10_0
fixed: vendor fix RHSA-2025:21120
Red Hat Enterprise Linux AppStream EUS (v.9.4) firefox 140.5.0-1.el9_4, firefox-x11 140.5.0-1.el9_4, thunderbird 140.5.0-1.el9_4
fixed: vendor fix RHSA-2025:22374
Red Hat Enterprise Linux AppStream EUS (v.9.6) firefox 140.5.0-1.el9_6, firefox-x11 140.5.0-1.el9_6, thunderbird 140.5.0-1.el9_6
fixed: vendor fix RHSA-2025:21121
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) firefox 140.5.0-1.el8_4, thunderbird 140.5.0-1.el8_4
fixed: vendor fix RHSA-2025:22367
Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox 140.5.0-1.el8_6, thunderbird 140.5.0-1.el8_6
fixed: vendor fix RHSA-2025:22368
Red Hat Enterprise Linux AppStream TUS (v.8.8) firefox 140.5.0-1.el8_8, thunderbird 140.5.0-1.el8_8
fixed: vendor fix RHSA-2025:22372
Red Hat Enterprise Linux Server (v. 7 ELS) firefox 140.5.0-1.el7_9
fixed: vendor fix RHSA-2025:22371

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 11 mo ago (2025-11-13)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

Mozilla Firefox
Mozilla Thunderbird

Classification

Weakness

CWE-288 Authentication Bypass Using an Alternate Path or Channel

References

mozilla.org /security/advisories/mfsa2025-87/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-88/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-89/
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1991945
permissions-required
mozilla.org /security/advisories/mfsa2025-90/
mozilla.org /security/advisories/mfsa2025-91/

Sources

CVE List CVE-2025-13013
NVD CVE-2025-13013

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary