CVE-2026-58058
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-58058 is indexed in Exploit-DB. Expect opportunistic scanning and exploitation attempts — prioritize remediation even though it is not (yet) in the CISA KEV catalog.
A remote, anonymous attacker can exploit a vulnerability in nmap to conduct a denial of service attack.
CSIRTS triage
- What
- A remote, anonymous attacker can exploit a vulnerability in nmap to conduct a denial of service attack.
- Who is affected
- Deployments of nmap are affected.
- Urgency
- Remediation is medium urgency due to the potential for denial of service.
- Action
- Update nmap to the latest version to mitigate this vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.88% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 56% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-58058 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
Advisory coverage (4)
- medium[UPDATE] [medium] nmap: Vulnerability allows denial of servicecert-bund · 2026-08-18
- unknownMultiple vulnerabilities in Microsoft Azure Linux (July 7, 2026)cert-fr-avis · 2026-07-07
- mediumCVE-2026-58058: Nmap through 7.99 does not keep the IPv6 extension-header walk within the captured packet in i…nvd · 2026-06-28
- mediumCVE-2026-58058: Nmap - Integer Underflow in IPv6 Extension Header Parsingmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-58058)