Advisory Details

July 22nd, 2025

(Pwn2Own) Phoenix Contact CHARX SEC-3150 OCPP Authentication Bypass Vulnerability

ZDI-25-628
ZDI-CAN-26346

CVE ID CVE-2025-25271
CVSS SCORE 3.1, AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
AFFECTED VENDORS Phoenix Contact
AFFECTED PRODUCTS CHARX SEC-3150
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Phoenix Contact CHARX SEC-3150 devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of the OCPP service. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to bypass authentication on the system.
ADDITIONAL DETAILS Phoenix Contact has issued an update to correct this vulnerability. More details can be found at:
https://certvde.com/en/advisories/VDE-2025-019/
DISCLOSURE TIMELINE
  • 2025-03-04 - Vulnerability reported to vendor
  • 2025-07-22 - Coordinated public release of advisory
  • 2025-07-22 - Advisory Updated
CREDIT Sina Kheirkhah (@SinSinology) of Summoning Team (@SummoningTeam)
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