CVE-2026-72712Nmap 7.99 Denial of Service via Zero-Length TCP Option Packet
Updated under an hour ago ()
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It affects Nmap Project Nmap. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-835
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Nmap Project Nmap nmap_project:nmap (from the name) | through 7.99 | CNA record |
References
- https://github.com/nmap/nmapproduct
- https://github.com/nmap/nmap/issues/3368issue-tracking
- https://github.com/nmap/nmap/commit/7ef4ee030a0023fe22616387a000032e1a678b6apatch
- https://www.vulncheck.com/advisories/nmap-denial-of-service-via-zero-length-tcp-option-packetthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.