CVE-2026-58058

CVE-2026-58058 : Nmap up to 7.99 is affected by an integer underflow in IPv6 extension-header parsing (ipv6_get_data_primitive in libnetutil/netutil.cc). A crafted or truncated IPv6 extension header returned by a scanned target or on-path attacker can cause the remaining-length to underflow to a ...