CVE-2026-18727

Katalog CVE

CVSS 6.5 · Medium EPSS 0,19%

Kerentanan Integer Underflow (Wrap or Wraparound) pada redhat enterprise linux. Skor CVSS 3.1 6.5 (Medium) menurut redhat.com.

Deskripsi (NVD)

A flaw was found in open-iscsi's iscsiuio component. This vulnerability involves an integer underflow and out-of-bounds read during Dynamic Host Configuration Protocol for IPv6 (DHCPv6) packet parsing. Specifically, crafted DHCPv6 Advertise traffic with a short User Datagram Protocol (UDP) length can cause the DHCPv6 payload length to underflow. An unauthenticated attacker on an adjacent network segment can exploit this by sending specially crafted IPv6 UDP traffic while the client is in an active DHCPv6 exchange, leading to a denial of service due to a process crash or service disruption.

Rincian

Terbit di NVD

12 Agustus 2026

Terakhir diubah

25 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

0,19% peluang dieksploitasi; lebih tinggi dari 7,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/security/cve/CVE-2026-18727 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2462956 issue tracking · advisory vendor