Skip to main content
CVE-2025-14327VulnerabilityPublished Updated

Red Hat Security Advisory: firefox security update

Affects Red Hat firefoxSource GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2025-14327· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade Red Hat firefox to 140.7 soon.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 140.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Red Hat firefox to 140.7.

Affected software

ProductAffectedFixed in
Red Hat Product Security Red HatAffected
  • >=140.0 <140.7
  • Red Hat
  • Red Hat Enterprise Linux
  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • src
  • firefox-0:140.7.0-1.el9_2.src
Fixed in
  • 140.7

AI-suggested

Red Hat has released updated Firefox packages (version 140.7.0-1.el9_2 and Firefox 147) that address these vulnerabilities. Users of Red Hat Enterprise Linux 9.2 and related distributions should apply these official updates promptly to remediate the security issues. Detailed update instructions are available in the Red Hat advisory RHSA-2026:2044 at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.

Description

Multiple security vulnerabilities affecting Mozilla Firefox have been addressed in a Red Hat security update for Red Hat Enterprise Linux 9.2. The issues include spoofing, use-after-free, memory safety bugs, sandbox escapes, information disclosure, mitigation bypass, and clickjacking across various Firefox components such as Downloads Panel, JavaScript engine, Graphics, IPC, Networking, DOM, and PDF Viewer. These vulnerabilities are fixed in Firefox ESR 140.7 and Firefox 147 versions distributed by Red Hat.

References

Community reviews

Loading reviews…