What is RHSA-2026:40021?

RHSA-2026:40021 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: OpenShift Container Platform 4.13.69 bug fix and security update

Which CVE IDs does RHSA-2026:40021 cover?

RHSA-2026:40021 covers the following CVE IDs: CVE-2026-1519, CVE-2026-5450, CVE-2026-46243, CVE-2026-46331. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:40021?

RHSA-2026:40021 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2026:40021HighCVSS 7.8

Red Hat Security Advisory: OpenShift Container Platform 4.13.69 bug fix and security update

Vendor

Red Hat Product Security

Published

July 23, 2026

Last Modified

July 25, 2026

🔗 CVE IDs covered (4)

CVE-2026-1519 →CVE-2026-5450 →CVE-2026-46243 →CVE-2026-46331 →

📋 Description

CVE-2026-1519 — bind: BIND: Denial of Service via maliciously crafted DNSSEC-validated zone CVE-2026-5450 — glibc: glibc: Heap Buffer Overflow in scanf with %mc format specifier and large width CVE-2026-46243 — kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions CVE-2026-46331 — kernel: net/sched: act_pedit: extend the writable skb range per key

🔗 References (7)

selfhttps://access.redhat.com/errata/RHSA-2026:40021
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2451305
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2459853
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479492
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2481486
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_40021.json