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Vulnerabilities CVE-2026-72712

CVE-2026-72712

Medium
Open
TLP:CLEAR

Nmap 7.99 Denial of Service via Zero-Length TCP Option Packet

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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.

Details

CVSS Score
6.9
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 11, 2026
Last Modified
Aug 13, 2026
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