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Red Hat Security Advisory

RHSA-2026:1496

openssl security update

Released 2026-01-28 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 3 records

Priority CRITICAL 85

Issue summary: Parsing CMS AuthEnvelopedData or EnvelopedData message with maliciously crafted AEAD parameters can trigger a stack buffer overflow.

CVSS 3.1HIGH 8.8 Network No auth User interaction EPSS 0.74793 Published 2026-01-27 Partial fix · 3.6.1, 3.5.5 +3 CWE-787
Priority MEDIUM 62

Issue summary: PBMAC1 parameters in PKCS#12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification.

CVSS 3.1MEDIUM 6.1 Local Low privileges User interaction EPSS 0.05234 Published 2026-01-27 Partial fix · 3.6.1, 3.5.5 +1 CWE-476
Priority LOW 35

Issue summary: Calling PKCS12_get_friendlyname() function on a maliciously crafted PKCS#12 file with a BMPString (UTF-16BE) friendly name containing non-ASCII BMP code point can trigger a one byte write before the alloca…

CVSS 3.1HIGH 7.4 Network No auth No interaction EPSS 0.00607 Published 2026-01-27 Partial fix · 3.6.1, 3.5.5 +4 CWE-787