Integer Underflow (Wrap or Wraparound) Affecting nmap package, versions [0,7.991)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-NMAP-17669878
- published29 Jun 2026
- disclosed28 Jun 2026
- creditHimanshu Anand
Introduced: 28 Jun 2026
CVE-2026-58058 (opens in a new tab)How to fix?
Upgrade nmap to version 7.991 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) in the ipv6_get_data_primitive process. An attacker can cause out-of-bounds reads and application crashes by sending a crafted IPv6 response with a truncated extension header during raw IPv6 scans.