Red Hat Security Advisory

RHSA-2026:35869

compat-openssl11 security update

Released 2026-07-06 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream EUS (v.9.6) compat-openssl11-1:1.1.1k-5.el9_6.3

TI-2026-33226 CVE-2026-45447 · GHSA-f684-cpcq-j565

MEDIUM 47

Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.04002 Published 2026-06-09 Partial fix · 4.0.1, 3.6.3 +5 CWE-416

TI-2026-22665 CVE-2026-28390 · GHSA-fgpp-q3px-3xhc

MEDIUM 40

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00836 Published 2026-04-07 Partial fix · 3.6.2, 3.5.6 +5 CWE-476