CVE-2021-40391

An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

• CWE-390
• CWE-755
• CWE-787

• https://lists.debian.org/debian-lts-announce/2021/12/msg00003.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1402Exploit, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/12/msg00003.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUM5GIUZJ7AVHVCXDZW6ZVCAPV2ISN47/
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1402Exploit, Third Party Advisory

Published

Nov 19, 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.

• CVE-2021-40386Kaseya Unitrends Client/Agent through 10.5,5 allows remote a…9.8
• CVE-2021-40387An issue was discovered in the server software in Kaseya Uni…8.8
• CVE-2021-40388A privilege escalation vulnerability exists in Advantech SQ …8.8
• CVE-2021-40389A privilege escalation vulnerability exists in the installat…8.8
• CVE-2021-4039A command injection vulnerability in the web interface of th…9.8
• CVE-2021-40390An authentication bypass vulnerability exists in the Web App…9.8
• CVE-2021-40392An information disclosure vulnerability exists in the Web Ap…7.5
• CVE-2021-40393An out-of-bounds write vulnerability exists in the RS-274X a…9.8
• CVE-2021-40394An out-of-bounds write vulnerability exists in the RS-274X a…9.8
• CVE-2021-40395Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2021-40396A privilege escalation vulnerability exists in the installat…8.8
• CVE-2021-40397A privilege escalation vulnerability exists in the installat…7.8