Integer Underflow Affecting python3-iscsi-initiator-utils package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-CENTOS10-PYTHON3ISCSIINITIATORUTILS-18746579
  • published13 Aug 2026
  • disclosed12 Aug 2026

Introduced: 12 Aug 2026

CVE-2026-18727  (opens in a new tab)
CWE-191  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 python3-iscsi-initiator-utils.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-iscsi-initiator-utils package and not the python3-iscsi-initiator-utils package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1