What is RHSA-2026:43588?

RHSA-2026:43588 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Which CVE IDs does RHSA-2026:43588 cover?

RHSA-2026:43588 covers the following CVE IDs: CVE-2026-14586, CVE-2026-40691, CVE-2026-56416. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:43588?

RHSA-2026:43588 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

RHSA-2026:43588HighCVSS 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Vendor

Red Hat Product Security

Published

July 22, 2026

Last Modified

July 24, 2026

🔗 CVE IDs covered (3)

CVE-2026-14586 →CVE-2026-40691 →CVE-2026-56416 →

📋 Description

CVE-2026-14586 — unbound: libngtcp2: Unbound: Denial of Service via assertion failure in DNS-over-QUIC environments CVE-2026-40691 — unbound: Unbound: Denial of Service via crafted DNSCrypt query CVE-2026-56416 — unbound: Unbound: Heap buffer overflow via malformed DNSSEC record

🔗 References (24)

selfhttps://access.redhat.com/errata/RHSA-2026:43588
externalhttps://images.redhat.com/
externalhttps://access.redhat.com/security/cve/CVE-2026-40691
externalhttps://access.redhat.com/security/updates/classification/
externalhttps://access.redhat.com/security/cve/CVE-2026-55717
externalhttps://access.redhat.com/security/cve/CVE-2026-56416
externalhttps://access.redhat.com/security/cve/CVE-2026-50251
externalhttps://access.redhat.com/security/cve/CVE-2026-41637
externalhttps://access.redhat.com/security/cve/CVE-2026-52863
externalhttps://access.redhat.com/security/cve/CVE-2026-55990
externalhttps://access.redhat.com/security/cve/CVE-2026-42955
externalhttps://access.redhat.com/security/cve/CVE-2026-55708
externalhttps://access.redhat.com/security/cve/CVE-2026-50243
externalhttps://access.redhat.com/security/cve/CVE-2026-50252
externalhttps://access.redhat.com/security/cve/CVE-2026-46582
externalhttps://access.redhat.com/security/cve/CVE-2026-56444
externalhttps://access.redhat.com/security/cve/CVE-2026-55991
externalhttps://access.redhat.com/security/cve/CVE-2026-50046
externalhttps://access.redhat.com/security/cve/CVE-2026-54478
externalhttps://access.redhat.com/security/cve/CVE-2026-14586
externalhttps://access.redhat.com/security/cve/CVE-2026-50248
externalhttps://access.redhat.com/security/cve/CVE-2026-44687
externalhttps://access.redhat.com/security/cve/CVE-2026-50045
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_43588.json