RHSA-2026:89738 — Security Advisory
Red Hat Security Advisory: compat-openssl11 security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · October 26, 2026
Updated · November 4, 2026
Topic
An update for compat-openssl11 is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The OpenSSL toolkit provides support for secure communications between machines. This version of OpenSSL package contains only the libraries from the 1.1.1 version and is provided for compatibility with previous releases.
Security Fix(es):
-
openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
-
openssl: compat-openssl: DTLS Retransmits Handshake Messages From a Stale Buffer Offset (CVE-2026-84782)
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.