What’s Vulnerable › Vulnerabilities

CVE-2026-22790: EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-26 · updated 2026-06-17
• Weakness: CWE-121

Description

EVerest is an EV charging software stack. Prior to version 2026.02.0, `HomeplugMessage::setup_payload` trusts `len` after an `assert`; in release builds the check is removed, so oversized SLAC payloads are `memcpy`'d into a ~1497-byte stack buffer, corrupting the stack and enabling remote code execution from network-provided frames. Version 2026.02.0 contains a patch.

Affected products

• everest-core: before 2026.02.0 — fixed in 2026.02.0

How to fix

Upgrade to a fixed version: everest-core 2026.02.0. Check the vendor advisory for mitigations.

References

• https://github.com/EVerest/EVerest/security/advisories/GHSA-wh8w-7cfc-gq7m
• https://github.com/EVerest/EVerest/security/advisories/GHSA-wh8w-7cfc-gq7m

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