PatchTheCVECVE-2026-64951: A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the fil
CVE-2026-64951 is a low-severity flaw (CVSS 3.5) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the file, a panic occurs which may crash the server process. The problem is a Divide by Zero bug in the ShouldPadFile() function.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 3.5 (Low) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 80%) |
| CISA exploited list | No |
| Weakness | CWE-369 |
| Published | 2026-08-12 |
| Last modified | 2026-10-23 |
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-64951?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-64951 being exploited?
CVE-2026-64951 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-64951 affect?
CVE-2026-64951 affects affected software. Severity is low (CVSS 3.5). A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the file, a panic occurs which may crash the server process. The problem is a Divide by Zero bug in the ShouldPadFile() function.
How urgent is CVE-2026-64951?
Priority 17/100. No elevated risk signals yet.