CVE-2025-68137 EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop
An integer overflow in EVerest's SDP packet parser can cause a stack buffer overflow or infinite loop, allowing remote code execution or denial of service.
- 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-2025-68137?
CVE-2025-68137 is a high-severity 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 2025.10.0, an integer overflow occurring in `SdpPacket::parse_header()` allows the current buffer length to be set to 7 after a complete header of size 8 has been read. The remaining length to read is computed using the current length subtracted by the header length which results in a negative value. This value is then interpreted as `SIZE_MAX` (or slightly less) because the expected type of the argument is `size_t`. Depending on whether the server is plain TCP or TLS, this leads to either an infinite loop or a stack buffer overflow. Version 2025.10.0 fixes the issue.
Which versions are affected by CVE-2025-68137?
It affects 1 product.
Products include Linuxfoundation Everest.
How do I fix CVE-2025-68137?
No fix has been published for CVE-2025-68137 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-68137 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-68137 exists.
Public exploit code: 1 Exploit-DB entry.
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-2026-33009 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio
- CVE-2026-26008 EVerest has OOB via EVSE ID Indexing Mismatch in OCPP 2.0.1 UpdateAllowedEnergyTransferModes
Sources
Also known as GHSA-7qq4-q9r8-wc7w.