CVE-2021-3903

vim is vulnerable to Heap-based Buffer Overflow

• CWE-122
• CWE-787

• http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List, Third Party Advisory
• https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43Patch, Third Party Advisory
• https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8Exploit, Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/06/msg00014.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
• http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List, Third Party Advisory
• https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43Patch, Third Party Advisory
• https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8Exploit, Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/06/msg00014.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/

Published

Oct 27, 2021

Last Modified

Jun 17, 2026

Status

Modified

• 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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