Buffer overflow in Everest Everest-Core

CVE-2025-68137

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-68137: rose from 0.003 to 0.013.

EPSS over last 30 days · oldest: 0.003 · newest: 0.013 · change: +0.010

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-68137?
CVE-2025-68137 is a high-severity vulnerability in Everest Everest-Core, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.3/10. Published 2026-01-21.
How severe is CVE-2025-68137?
High severity. CVSS v3 base score is 8.3 out of 10.