What is CVE-2026-77798?

CVE-2026-77798 is a medium-severity vulnerability in Rapid7 Velociraptor, classified under CWE-833. CVSS score: 6.5/10. Published 2026-09-24.

How severe is CVE-2026-77798?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Rapid7 Velociraptor

CVE-2026-77798

Velociraptor contains a deadlock condition that may be triggered by authenticated users. The issue stems from a lock management bug in the user management module.

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Rapid7 Velociraptor

Weakness classification (CWE)

CWE-833

References

docs.velociraptor.app/announcements/advisories/cve-2026-7798/
github.com/Velocidex/velociraptor/commit/b64d915422da2e8366781bea2b5c5e6808df82…

Frequently asked questions

What is CVE-2026-77798?: CVE-2026-77798 is a medium-severity vulnerability in Rapid7 Velociraptor, classified under CWE-833. CVSS score: 6.5/10. Published 2026-09-24.
How severe is CVE-2026-77798?: Medium severity. CVSS v3 base score is 6.5 out of 10.