Vulnerability · Published Mar 26, 2026 · Assigned by GitHub_M

CVE-2026-22593EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing

High 8.4

In plain English

A high-severity security flaw in everest-core from EVerest. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)8.4High

Exploit odds (30 days)0.1%top 96.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

EVerest is an EV charging software stack. Prior to version 2026.02.0, an off-by-one check in IsoMux certificate filename handling causes a stack-based buffer overflow when a filename length equals `MAX_FILE_NAME_LENGTH` (100). A crafted filename in the certificate directory can overflow `file_names[idx]`, corrupting stack state and enabling potential code execution. Version 2026.02.0 contains a patch.

Affected products (as reported)

Vendor	Product	Versions
EVerest	everest-core	< 2026.02.0

Weakness: CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/EVerest/EVerest/security/advisories/GHSA-cpqf-mcqc-783m x_refsource_CONFIRM