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

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

EPSS (exploitation in 30 days)

1.3% · top 29% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.

Weakness

• CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (opens in a new tab)All about CWE-120 and its CVEs
• CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') (opens in a new tab)All about CWE-835 and its CVEs

Affected products

• EVerest · everest-core

  • affected < 2025.10.0

References (1)

• https://github.com/EVerest/everest-core/security/advisories/GHSA-7qq4-q9r8-wc7w (opens in a new tab)x_refsource_CONFIRM

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-68137](https://trackcve.app/badge/CVE-2025-68137.svg)](https://trackcve.app/cve/CVE-2025-68137)

Record last updated 21 Jan 2026, 19:51 UTC.