Qemu: [hw/uefi: heap overflow] (CVE-2026-5744)
A heap overflow vulnerability exists in the UEFI component of QEMU, identified as CVE-2026-5744. This vulnerability affects multiple specific Ubuntu-packaged versions of QEMU. The issue is categorized as medium severity. No CVSS score or detailed technical exploitation information is provided. No known exploits are reported in the wild. There is no explicit patch or remediation information available in the provided data.
AI Analysis
Technical Summary
CVE-2026-5744 is a heap overflow vulnerability in the hardware UEFI implementation of QEMU. The vulnerability affects multiple Ubuntu-specific QEMU package versions, including 1:9.2.1+ds-1ubuntu5 and various 10.x releases up to 10.2.1+ds-1ubuntu3.2. The vulnerability is classified as medium severity but lacks a CVSS score and detailed technical description. No vendor advisory or patch information is provided, and no known exploitation in the wild has been reported.
Potential Impact
The heap overflow in QEMU's UEFI component could potentially lead to memory corruption, which might be exploitable to cause crashes or arbitrary code execution within the virtualized environment. However, no specific impact details or exploitation reports are available. The medium severity suggests a moderate risk but without further details, the exact impact remains unclear.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor official Ubuntu and QEMU advisories for updates. Until a fix is available, cautious use of affected QEMU versions is advised.
Qemu: [hw/uefi: heap overflow] (CVE-2026-5744)
Description
A heap overflow vulnerability exists in the UEFI component of QEMU, identified as CVE-2026-5744. This vulnerability affects multiple specific Ubuntu-packaged versions of QEMU. The issue is categorized as medium severity. No CVSS score or detailed technical exploitation information is provided. No known exploits are reported in the wild. There is no explicit patch or remediation information available in the provided data.
Affected software
pkg:deb/ubuntu/qemu?arch=source&distro=questingpkg:deb/ubuntu/qemu?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5744 is a heap overflow vulnerability in the hardware UEFI implementation of QEMU. The vulnerability affects multiple Ubuntu-specific QEMU package versions, including 1:9.2.1+ds-1ubuntu5 and various 10.x releases up to 10.2.1+ds-1ubuntu3.2. The vulnerability is classified as medium severity but lacks a CVSS score and detailed technical description. No vendor advisory or patch information is provided, and no known exploitation in the wild has been reported.
Potential Impact
The heap overflow in QEMU's UEFI component could potentially lead to memory corruption, which might be exploitable to cause crashes or arbitrary code execution within the virtualized environment. However, no specific impact details or exploitation reports are available. The medium severity suggests a moderate risk but without further details, the exact impact remains unclear.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor official Ubuntu and QEMU advisories for updates. Until a fix is available, cautious use of affected QEMU versions is advised.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-5744
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a74cf9ebf8831d5391b0424
Added to database: 08/06/2026, 18:17:02 UTC
Last enriched: 08/06/2026, 19:05:36 UTC
Last updated: 08/06/2026, 19:05:36 UTC
Views: 2
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