SB2026090969 - Improper Authentication in open-iscsi

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Main Vulnerability Database SB2026090969

SB2026090969 - Improper Authentication in open-iscsi

Published: September 9, 2026

Security Bulletin ID SB2026090969
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Authentication (CVE-ID: N/A)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose CHAP credentials.

The vulnerability exists due to improper authentication of the IPC peer in iscsiadm when a privileged user runs an operation that sends a populated node_rec_t. A remote attacker can bind an attacker-controlled abstract UNIX socket and receive the IPC request to disclose CHAP credentials.

Exploitation requires the legitimate ISCSIADM_ABSTRACT_NAMESPACE socket to be unbound.


Remediation

Install update from vendor's website.

References