CVE-2026-58058 (GCVE-0-2026-58058)
Vulnerability from cvelistv5
Published
2026-06-28 01:32
Modified
2026-06-29 14:53
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Summary
Nmap through 7.99 does not keep the IPv6 extension-header walk within the captured packet in ipv6_get_data_primitive (libnetutil/netutil.cc), so the pointer advances past the buffer and the remaining-length computation underflows to a large value. A scanned target or on-path attacker returning a crafted IPv6 response with a truncated extension header can trigger out-of-bounds reads and a crash during raw IPv6 scans.
References
Impacted products
Vendor Product Version
Nmap Nmap Version: 0   <
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