Local Privilege Escalation Vulnerability in QEMU (CVE-2026-3886)

Linuxsecurity

Local Privilege Escalation Vulnerability in QEMU (CVE-2026-3886)

First seen 1 Sep 2026, 02:01 UTC • •57.1

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ThreatCluster •September 2, 2026 at 00:29 UTC

•CVE-2026-3886 allows local privilege escalation via the 'virtio-gpu' driver.
•SUSE Micro 6.1 and earlier versions are affected; patch released on August 27, 2026.
•The CVSS score for this vulnerability is 8.8, indicating a high severity.

An important advisory was issued for SUSE Micro 6.1 regarding a vulnerability in QEMU, specifically CVE-2026-3886. This flaw arises from inadequate validation of user-supplied data in the 'virtio-gpu' driver, potentially allowing local privilege escalation through an integer overflow. The vulnerability affects systems running SUSE Linux Micro 6.1 and earlier versions. The CVSS score for this vulnerability is 8.8, indicating a high severity level. Alongside this critical fix, several other updates and bug fixes were also included in the advisory. The vulnerability was disclosed on August 27, 2026, with patches made available immediately. Administrators are urged to apply the updates promptly to mitigate the risk of exploitation. The advisory highlights the importance of maintaining updated systems to prevent potential local attacks.

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Timeline

2026-08-27

Advisory released for CVE-2026-3886

SUSE issued an advisory detailing a local privilege escalation vulnerability in QEMU affecting SUSE Micro 6.1.

2026-08-27

Patch made available

Patches addressing CVE-2026-3886 and other bug fixes were released to mitigate the identified vulnerabilities.

More articles in this cluster (2)

Threat Graph

7 entities, 8 inferred relationships (STIX 2.1).

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Technique (2)

Privilege Escalation
T1068 - Exploitation for Privilege Escalation

Vulnerability (1)

CVE-2026-3886

Weakness (2)

CWE-190 - Integer Overflow Or Wraparound
CWE-269 - Improper Privilege Management

Affected Platform (2)

Linux
QEMU

Relationships

CVE-2026-3886 targets Linux
CVE-2026-3886 targets QEMU
Privilege Escalation targets Linux
Privilege Escalation targets QEMU
T1068 - Exploitation for Privilege Escalation targets Linux
T1068 - Exploitation for Privilege Escalation targets QEMU
CVE-2026-3886 related to CWE-190 - Integer Overflow Or Wraparound
CVE-2026-3886 related to CWE-269 - Improper Privilege Management

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