High7.5Vendor: MediumRed Hat & Ubuntu Linux
Arbitrary code execution due to use-after-free vulnerability
CVE-2026-33416 Published Mar 26, 2026
CVE-2026-33416
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Arbitrary code execution due to use-after-free vulnerability. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-825. Affected package(s): libpng, firefox, discovery/discovery-ui-rhel9:1782756541, libpng15, thunderbird, libpng12. Resolved in Red Hat advisory RHSA-2026:18064 — update the affected packages (`sudo dnf update`).
Affected versions
- libpng-2:1.6.37-15.el9_8.2
- firefox-0:140.9.1-1.el9_4
- firefox-0:140.9.1-1.el9_6
- firefox-0:140.9.1-1.el9_7
- discovery/discovery-ui-rhel9:1782756541
- firefox-0:140.9.1-1.el10_1
- libpng15-0:1.5.30-15.el9_8.1
- firefox-0:140.9.1-1.el10_0
- firefox-0:140.9.1-1.el9_0
- thunderbird-0:140.9.1-1.el10_1
- thunderbird-0:140.9.1-1.el9_7
- libpng-2:1.6.34-11.el8_10
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:18064
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:18064 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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