OpenSSL TLS 1.3 server may choose unexpected key agreement group
CVE-2026-2673 is fixed in 14 products on 1 platform, first by RHSA-2026:19066, released March 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.
OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library. Security Fix(es): * openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing (CVE-2026-28390) 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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libssl3t64 · Ubuntu 25.10 (questing) | 3.5.3-1ubuntu3.3 | libssl3t64 3.5.3-1ubuntu3.3 | Apr 15, 2026 |
| libssl3t64 · Ubuntu 26.04.1 LTS (resolute) | 3.5.5-1ubuntu3 | libssl3t64 3.5.5-1ubuntu3 | Apr 6, 2026 |
| openssl · Debian 13.5 (trixie) | 3.5.5-1~deb13u2 | DEBIAN-CVE-2026-2673 | Mar 13, 2026 |
| openssl · Debian 14 | 3.6.2-1 | DEBIAN-CVE-2026-2673 | Mar 13, 2026 |
| openssl · RHEL 10 | 3.5.5-2.el10_2 | RHSA-2026:19066 | Mar 13, 2026 |
| openssl · RHEL 9 | 1:3.5.5-3.el9_8 | RHSA-2026:22312 | Jun 24, 2026 |
| openssl · Ubuntu 25.10 (questing) | 3.5.3-1ubuntu3.3 | openssl 3.5.3-1ubuntu3.3 | Apr 15, 2026 |
| openssl · Ubuntu 26.04.1 LTS (resolute) | 3.5.5-1ubuntu3 | openssl 3.5.5-1ubuntu3 | Apr 6, 2026 |
| openssl · almalinux 10 | 1:3.5.5-2.el10_2.alma.1 | ALSA-2026:19066 | May 19, 2026 |
| openssl · almalinux 9 | 1:3.5.5-3.el9_8 | ALSA-2026:22312 | Jun 1, 2026 |
| openssl · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-3 · opensuse-leap 16.0 | 3.5.0-160000.8.1 | OPENSUSE-SU-2026:21005-1 | Jun 22, 2026 |
| openssl-3 · sles 16.0 | 3.5.0-160000.8.1 | SUSE-SU-2026:22315-1 | Jun 22, 2026 |
| openssl-debuginfo · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-debugsource · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-devel · RHEL 9 | 1:3.5.5-3.el9_8 | RHSA-2026:22312 | Jun 24, 2026 |
| openssl-devel · almalinux 10 | 1:3.5.5-2.el10_2.alma.1 | ALSA-2026:19066 | May 19, 2026 |
| openssl-devel · almalinux 9 | 1:3.5.5-3.el9_8 | ALSA-2026:22312 | Jun 1, 2026 |
| openssl-devel · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-fips-provider-latest · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-fips-provider-latest-debuginfo · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-libs · RHEL 9 | 1:3.5.5-3.el9_8 | RHSA-2026:22312 | Jun 24, 2026 |
| openssl-libs · almalinux 10 | 1:3.5.5-2.el10_2.alma.1 | ALSA-2026:19066 | May 19, 2026 |
| openssl-libs · almalinux 9 | 1:3.5.5-3.el9_8 | ALSA-2026:22312 | Jun 1, 2026 |
| openssl-libs · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-libs-debuginfo · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-perl · RHEL 9 | 1:3.5.5-3.el9_8 | RHSA-2026:22312 | Jun 24, 2026 |
| openssl-perl · almalinux 10 | 1:3.5.5-2.el10_2.alma.1 | ALSA-2026:19066 | May 19, 2026 |
| openssl-perl · almalinux 9 | 1:3.5.5-3.el9_8 | ALSA-2026:22312 | Jun 1, 2026 |
| openssl-perl · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-provider-legacy · Ubuntu 25.10 (questing) | 3.5.3-1ubuntu3.3 | openssl-provider-legacy 3.5.3-1ubuntu3.3 | Apr 15, 2026 |
| openssl-provider-legacy · Ubuntu 26.04.1 LTS (resolute) | 3.5.5-1ubuntu3 | openssl-provider-legacy 3.5.5-1ubuntu3 | Apr 6, 2026 |
| openssl-snapsafe-libs · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
| openssl-snapsafe-libs-debuginfo · amzn 2023 | 1:3.5.5-1.amzn2023.0.3 | ALAS2023-2026-1522 | Mar 30, 2026 |
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