CVE-2025-68137: everest everest-core Classic Buffer Overflow

Vulnerability summary

CVE-2025-68137 is a high (CVSS 8.4) Classic Buffer Overflow vulnerability in everest everest-core. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 21-01-2026
   PublishedVulnerability first disclosed.
2. 21-01-2026
   Last modifiedVulnerability information updated.

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.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.