CVE-2021-3973
HIGHCVSS 7.8/10EPSS 1.67%
Last modified
CVE-2021-3973 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. vim is vulnerable to Heap-based Buffer Overflow. EPSS estimates a 1.67% chance of exploitation in the next 30 days.
Description
vim is vulnerable to Heap-based Buffer Overflow
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | < 8.2.3611 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Debian | Debian Linux | 9.0 |
References
- http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List, Third Party Advisory
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847Patch, Third Party Advisory
- https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052eExploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-32Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List, Third Party Advisory
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847Patch, Third Party Advisory
- https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052eExploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-32Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3973?
vim is vulnerable to Heap-based Buffer Overflow
How severe is CVE-2021-3973?
CVE-2021-3973 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3973?
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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Are you affected by CVE-2021-3973?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST