CVE-2026-77797: Velociraptor Prefetch parser out of bounds

Low severity · published Sep 24, 2026

CVE-2026-77797

Velociraptor Prefetch parser out of bounds

3.6

CVSS

0.1%

EPSS

On KEV

Description

Velociraptor's prefetch library contains an out of bound vulnerability which may cause a crash when parsing certain malformed prefetch files.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack vector

Local

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

None

Integrity

Low

Availability

None

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.1% · higher than 1% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Velociraptor · Rapid7

before 0.77.3 · source: vendor

Affected product

Velociraptor

Rapid7

All Velociraptor CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-77797

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-77797

docs.velociraptor.app

http://docs.velociraptor.app/announcements/advisories/cve-2026-7797/

github.com

https://github.com/Velocidex/go-prefetch/commit/4bae9796298011598d577b125e0b3db3ee03eb74