NULL pointer dereference in OpenBSD - #VU126141
Published: April 15, 2026
Vulnerability identifier: #VU126141
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenBSD
Affected software:
OpenBSD
OpenBSD
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in RPKI client within the x509_get_time() function in /cvs/src/usr.sbin/rpki-client/x509.c. A remote attacker with control over a malicious RRDP Publication Server can send specially crafted response to the client and perform a denial of service attack.
Remediation
Install updates from vendor's website.