Improper access control in PPP - #VU151450
Published: September 19, 2026
Vulnerability identifier: #VU151450
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in the PPPD radius plugin when processing the radius-config-file command-line option. A remote attacker can specify an arbitrary configuration file path to disclose portions of the file through parse error messages.
Exploitation requires pppd to be installed setuid-root and a preconfigured peer file that loads the radius plugin.
Affected software
PPP
Remediation
Install security update from vendor's website.
PPP - update to 2.5.4