CVE-2026-58058

Katalog CVE

CVSS 6.5 · Medium EPSS 1,5%

Kerentanan Integer Underflow (Wrap or Wraparound) pada nmap. Skor CVSS 3.1 6.5 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

28 Juni 2026

Terakhir diubah

30 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

1,5% peluang dieksploitasi; lebih tinggi dari 72,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nmap/nmap/commit/bb6754e76bb1686315008e1aa1c40202a513fb83 patch
• https://nmap.org/changelog.html patch · release notes
• https://www.vulncheck.com/advisories/nmap-integer-underflow-in-ipv6-extension-header-parsing patch · advisory pihak ketiga
• https://github.com/bikini/exploitarium/tree/main/nmap-ipv6-extlen-wrap-poc broken link