CVE catalog
CVE-2026-5747
An out-of-bounds write issue in the virtio PCI transport in Firecracker 1.13.0 through 1.14.3 and 1.15.0 on x86_64 and aarch64 might allow a local guest user with root privileges to crash the Firecrac
- Severity
- High · CVSS 8.7
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.26% · Oct 27, 2026
A flaw was found in Firecracker, specifically an out-of-bounds write issue within the virtio PCI transport. A local guest user with root privileges can exploit this by modifying virtio queue configuration registers after device activation. This could lead to crashing the Firecracker Virtual Machine Monitor (VMM) process, resulting in a denial of service. Under specific preconditions, such as using a custom guest kernel or certain snapshot configurations, this flaw may also allow for arbitrary code execution on the host system. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | firecracker | Not reported | Not reported | unknown |
| Opensuse | firecracker | tumbleweed | 1.15.1-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Opensuse | firecracker | rpm | tumbleweed | 1.15.1-1.1 | Not reported | OPENSUSE-SU-2026:10561-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [firecracker]Fixed
Source package: [firecracker]
Details (1)
1.16.1-1.2· x86_64 · tumbleweedFixed · Fixed:
1.15.1-1.1nvd · firecracker · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10561-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-5747]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10561-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5747.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]