Vulnerability Description
Nmap versions up to and including 7.99 contains a denial of service vulnerability that allows remote attackers to crash the application by sending a crafted packet containing a zero-length TCP option. The malformed packet forces the Packet:parse_options() function in nselib/packet.lua to allocate objects in an infinite loop, causing an out-of-memory condition that results in application crash.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/nmap/nmap
- https://github.com/nmap/nmap/commit/7ef4ee030a0023fe22616387a000032e1a678b6a
- https://github.com/nmap/nmap/issues/3368
- https://www.vulncheck.com/advisories/nmap-denial-of-service-via-zero-length-tcp-
- https://github.com/nmap/nmap/issues/3368
FAQ
What is CVE-2026-72712?
CVE-2026-72712 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Nmap versions up to and including 7.99 contains a denial of service vulnerability that allows remote attackers to crash the application by sending a crafted packet containing a zero-length TCP option....
How severe is CVE-2026-72712?
CVE-2026-72712 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-72712?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.