[ CVE-2026-101022 · Published 9 Oct 2026 ]
Vulnerability in Grid Protection Alliance openPDC
CVSS 4.3
EPSS <1%No fix listed yet
[ Description ]Official description
A Modbus connection feature on openPDC accepts a caller-specified destination address and port with no restriction on which internal hosts may be targeted. An authenticated user can attempt connections to arbitrary internal network destinations, revealing which destinations are reachable. With repeated attempts, an attacker may be able to map the internal network.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.