CVE-2025-68140 EVerest allows null session ID to bypass session ID verification
Attackers can bypass session verification by using a null session ID, allowing unauthorized MQTT message emission and session context updates in EVerest.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-68140?
CVE-2025-68140 is a medium-severity authentication bypass vulnerability in everest-core, published on 21 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
EVerest is an EV charging software stack. Prior to version 2025.9.0, once the validity of the received V2G message has been verified, it is checked whether the submitted session ID matches the registered one. However, if no session has been registered, the default value is 0. Therefore, a message submitted with a session ID of 0 is accepted, as it matches the registered value. This could allow unauthorized and anonymous indirect emission of MQTT messages and communication with V2G messages handlers, updating a session context. Version 2025.9.0 fixes the issue.
Weakness: CWE-863
Which versions are affected by CVE-2025-68140?
It affects 1 product.
Products include Linuxfoundation Everest.
How do I fix CVE-2025-68140?
No fix has been published for CVE-2025-68140 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-68140 being exploited?
There is no known exploitation of CVE-2025-68140 in the wild and no public exploit code.
Other vulnerabilities in everest-core
- CVE-2026-22790 EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload
- CVE-2026-22593 EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing
- CVE-2026-23995 EVerest has stack buffer overflow in ifreq.ifr_name when interface name exceeds IFNAMSIZ
- CVE-2025-68137 EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop
- CVE-2026-33009 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio
Sources
Also known as GHSA-w385-3jwp-x47x.