CVE-2025-68137

EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop

State: Published
Severity: 8.4 High
Published: Jan 21, 2026
Updated: Jan 21, 2026
Reserved: Dec 15, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
everest-coreEVerest	< 2025.10.0Affected

References

https://github.com/EVerest/everest-core/security/advisories/GHSA-7qq4-q9r8-wc7w

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