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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 140.7.1 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 140.7.1
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 140.7.1.

Affected software

ProductAffectedFixed in
Red Hat Product Security Red HatAffected
  • >=140.7.0 <140.7.1
Fixed in
  • 140.7.1

AI-suggested

Red Hat has released updated Firefox ESR 140.7.0-1.el9_0 packages for Red Hat Enterprise Linux 9.0 that address these vulnerabilities. Users should apply the official Red Hat update promptly to remediate the issues. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the vendor-provided update.

Description

Multiple security vulnerabilities affecting Mozilla Firefox ESR 140.7 and related versions distributed with Red Hat Enterprise Linux 9.0 have been addressed in a Red Hat security update. These vulnerabilities include spoofing, use-after-free, memory safety bugs, sandbox escapes, information disclosure, mitigation bypass, and clickjacking issues across various Firefox components such as Downloads Panel, JavaScript engine, Graphics, IPC, Networking, DOM, and PDF Viewer. The update is rated as important by Red Hat and fixes these issues in Firefox ESR 140.7.0-1.el9_0 packages for multiple architectures.

References

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