CVE-2021-46790
HIGHCVSS 7.8/10EPSS 0.50%
Last modified
CVE-2021-46790 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tuxera | Ntfs-3g | <= 2021.8.22 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
| Fedoraproject | Fedora | 35 |
| Fedoraproject | Fedora | 36 |
References
- http://www.openwall.com/lists/oss-security/2022/05/26/1Mailing List, Third Party Advisory
- https://github.com/tuxera/ntfs-3g/issues/16Exploit, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5160Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/05/26/1Mailing List, Third Party Advisory
- https://github.com/tuxera/ntfs-3g/issues/16Exploit, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5160Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46790?
ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.
How severe is CVE-2021-46790?
CVE-2021-46790 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46790?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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