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CVE-2026-12289VulnerabilityPublished Updated

SUSE firefox · security update for firefox

Affects SUSE firefoxSource GCVE Database

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Authoritative record:CVE-2026-12289· High 8.8

Not known to be exploited · CVSS 8.8 High : upgrade the Red Hat redhat/firefox package to 9.8 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Upgrade the Red Hat redhat/firefox package to 9.8.

Affected software

ProductAffectedFixed in
Red Hatredhat/firefoxpkg:rpm/redhat/firefoxOther threatsAffected
  • <9.8
Fixed in
  • 9.8

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

This vulnerability has been fixed in Firefox 152, Firefox ESR 140.12, and Thunderbird 140.12 and 152. Users and administrators should apply these official updates to remediate the issue. No additional mitigation actions are required beyond applying the vendor-provided patches. There are no known exploits in the wild at this time.

Description

Multiple security vulnerabilities have been identified and fixed in Mozilla Thunderbird, including sandbox escapes, information disclosure, memory safety bugs, denial-of-service, privilege escalation, mitigation bypasses, and boundary condition errors. These issues affect Thunderbird ESR 140.12 and related Firefox versions. Red Hat has released security updates for Thunderbird in Red Hat Enterprise Linux 9.6 Extended Update Support to address these vulnerabilities.

References

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