SUSE firefox · security update for firefox
Affects SUSE firefoxSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 9.8 Critical : upgrade the Red Hat redhat/firefox package to 140.9.1 as a priority.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 140.9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 7 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 140.9.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/firefoxpkg:rpm/redhat/firefoxOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A security update is available and should be applied to affected Red Hat Enterprise Linux 9 systems. The update includes fixes for Firefox ESR 140.9.1 and related packages. Users should follow Red Hat's official guidance to apply the update as detailed in the advisory (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated beyond applying the provided patches.
Description
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * libpng: libpng: Arbitrary code execution due to use-after-free vulnerability (CVE-2026-33416) * libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion (CVE-2026-33636) * thunderbird: firefox: Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 (CVE-2026-5734) * thunderbird: firefox: Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 (CVE-2026-5731) * firefox: thunderbird: Incorrect boundary conditions, integer overflow in the Graphics: Text component (CVE-2026-5732) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
- access.redhat.com/errata/RHSA-2026:7671 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2451805 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2451819 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2455897 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2455901 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2455908 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7671.json (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/rhsa-2026_7671.json (opens in a new tab)
- lists.suse.com/pipermail/suse-liberty-linux-updates/2026-April/003301.html (opens in a new tab)
- suse.com/security/cve/CVE-2026-33416/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-33636/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-5731/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-5732/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-5734/ (opens in a new tab)