EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution, Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120, CWE-835 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA everest-core (EVerest) Fixed in 2025.10.0
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68137
More EVerest vulnerabilities
- TI-2026-25456 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio CVSS 3.1HIGH 8.2
- TI-2024-24822 EVerest has an integer overflow in the "v2g_incoming_v2gtp" function CVSS 3.1CRITICAL 9.1
- TI-2026-18308 EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload CVSS 3.1HIGH 8.8
- TI-2026-19334 EVerest has stack buffer overflow in ifreq.ifr_name when interface name exceeds IFNAMSIZ CVSS 3.1HIGH 8.4
- TI-2026-18154 EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing CVSS 3.1HIGH 8.4
- TI-2025-41717 Resource allocation without limits in everest-core CVSS 3.1HIGH 7.4
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences