Missing authorization in libvirt
Priority LOW 27CWE-862Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- Partial Red Hat: 2 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-862.
Summary
An incorrect permissions check was discovered in libvirt 4.8.0 and above. The readonly permission was allowed to invoke APIs depending on the guest agent, which could lead to potentially disclosing unintended information or denial of service by causing libvirt to block.
Why it matters now
EPSS 0.01117 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The libvirt Project | libvirt | 4.8.0 and above | — | No fix listed | CNA |
- libvirt VendorThe libvirt Project Affected 4.8.0 and above Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* | 4.8.0 to before 5.3.0 | Vulnerable | Red Hat |
| cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* | 42.3 | Vulnerable | openSUSE |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
- cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* Versions 4.8.0 to before 5.3.0 Vulnerable ·Red Hat
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* Versions 42.3 Vulnerable ·openSUSE
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix yet |
| Advanced Virtualization CodeReady Builder for RHEL 8.1.0 | Fixed | — |
| Advanced Virtualization for RHEL 8.1.0 | Fixed | — |
Not affected: 6 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Storage 3
- Red Hat Virtualization 4
Timeline
- 2026-10-02 Threatist record created from CVE-2019-3886
- 2026-10-03 Alias added: GHSA-wxvx-hq9w-75x9
References
Sources
- CVE-2019-3886 · CVE Program
- CVE-2019-3886 · NVD
- FIRST EPSS
- GHSA-wxvx-hq9w-75x9 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-3886 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences