Improper Authentication in open-iscsi - #VU148722
Published: September 9, 2026
Vulnerability identifier: #VU148722
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: N/A
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
open-iscsi
Remediation
Install security update from vendor's website.
open-iscsi - update to 2.1.13