CVE-2026-57965
MEDIUM 5.1A flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine. This issue requires the SPICE host to be untrusted or compromised for exploitation.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 2nd percentile
Impact if exploited
5.1CVSS 3.1 · MEDIUM
- ConfidentialityNone
- IntegrityLow
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-57965/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-57965/poc.json
Affected
Vendors Red Hat Redhat Spice Space
Products Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Enterprise Linux Spice Vdagent
Weakness (CWE)
- CWE-190: Integer Overflow or Wraparound
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Redhat | Enterprise Linux | 6.0 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
| Spice Space | Spice Vdagent | * |
All CVSS metrics
- MEDIUM 5.1 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H - MEDIUM 5.1 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H