High7.5Red Hat & Ubuntu Linux
buffer over-read via malformed enhanced status code
CVE-2026-43964 Published May 4, 2026
CVE-2026-43964
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
buffer over-read via malformed enhanced status code. Red Hat rates this important (CVSS 7.5). Weakness: CWE-193. Affected package(s): postfix. Resolved in Red Hat advisory RHSA-2026:25932 — update the affected packages (`sudo dnf update`).
Affected versions
- postfix-2:3.5.8-8.el8_10
- postfix-2:3.8.5-10.el10_2
- postfix-2:3.5.25-3.el9_8
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:25932
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-2026:25932 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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