CVE-2026-5744: [hw/uefi · heap overflow]
Affects qemuSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 16:15 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10qemupkg:deb/ubuntu/qemu?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10qemu-hwepkg:deb/ubuntu/qemu-hwe?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSqemupkg:deb/ubuntu/qemu?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSqemu-hwepkg:deb/ubuntu/qemu-hwe?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10qemupkg:deb/ubuntu/qemu?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, cautious use of affected QEMU versions is advised.
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.