🛡️ OESA-2026-1263 — qemu (CVE-2025-11234)

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.(CVE-2025-11234)

Affected software

OESA-2026-1263 is recorded against 1 package.

  • qemu (fixed in 4.1.0-92.oe2003sp4)

Timeline and source

Published on 30 January 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-01-30
Updated 2026-08-12
Modified 2026-01-30
Fix URL N/A

Affected Packages

Software From version Fixed in
qemu — 4.1.0-92.oe2003sp4

Similar Threats

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