CVE-2026-72712

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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-option-packet
https://github.com/nmap/nmap/issues/3368

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-11 18:18

Updated : 2026-08-13 15:20

NVD link : CVE-2026-72712

Mitre link : CVE-2026-72712

CVE.ORG link : CVE-2026-72712

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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