What is RHSA-2026:18772?

RHSA-2026:18772 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: qemu-kvm security update

Which CVE IDs does RHSA-2026:18772 cover?

RHSA-2026:18772 covers the following CVE IDs: CVE-2025-11234. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:18772?

RHSA-2026:18772 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

Which products are affected by RHSA-2026:18772?

RHSA-2026:18772 affects 117 products, including: Red Hat Enterprise Linux AppStream (v. 9); qemu-guest-agent-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); qemu-guest-agent-17:10.1.0-17.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); qemu-guest-agent-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); qemu-guest-agent-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); and others — see the full list on the advisory page.

RHSA-2026:18772MediumCVSS 7.5

Red Hat Security Advisory: qemu-kvm security update

Vendor

Red Hat Product Security

Published

May 19, 2026

Last Modified

August 26, 2026

🔗 CVE IDs covered (1)

CVE-2025-11234 →

📋 Description

CVE-2025-11234 — qemu-kvm: VNC WebSocket handshake use-after-free

🎯 Affected products117

Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-17:10.1.0-17.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-debuginfo-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-debuginfo-17:10.1.0-17.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-debuginfo-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-guest-agent-debuginfo-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-17:10.1.0-17.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-debuginfo-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-debuginfo-17:10.1.0-17.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-debuginfo-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-img-debuginfo-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-17:10.1.0-17.el9_8.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-dbus-debuginfo-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-dbus-debuginfo-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-dbus-debuginfo-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-debuginfo-17:10.1.0-17.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-debuginfo-17:10.1.0-17.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
qemu-kvm-audio-pa-debuginfo-17:10.1.0-17.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
+87 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products117

✅ Remediation

🔗 References (13)