CVE-2026-18635: Velociraptor Multiple Crashes in NTFS Parser when applied to invalid NTFS Volumes
Velociraptor's NTFS parsing library mishandles several out of bound and memory exhaustion bugs which may be triggered by maliciously crafted NTFS images.
Typically Velociraptor's NTFS parser is used on live NTFS filesystems, limiting the opportunity of attackers corrupting the filesystem. However, in some applications (e.g. dead disk forensics https://docs.velociraptor.app/docs/forensic/deaddisk/ ) Velociraptor may be used on untrusted NTFS image files.
If an attacker is able to inject maliciously corrupted NTFS Volumes they can cause a crash and a Denial of Service.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-18635?
The severity of CVE-2026-18635 is medium, rated at 6.2 on the CVSS scale.
How do I fix CVE-2026-18635?
To address CVE-2026-18635, ensure you update to the latest version of Velociraptor that includes fixes for the NTFS parsing issues.
What types of attacks can exploit CVE-2026-18635?
CVE-2026-18635 can be exploited through maliciously crafted NTFS images that trigger out of bounds and memory exhaustion bugs in the parser.
What impact does CVE-2026-18635 have on my system?
CVE-2026-18635 may lead to crashes in Velociraptor when processing invalid NTFS volumes, potentially disrupting services.
Is my system vulnerable to CVE-2026-18635 if I don't use Velociraptor?
If you do not utilize Velociraptor or its NTFS parsing library, your system is not directly impacted by CVE-2026-18635.