CVE-2026-22790

EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload

HIGH
8.8
CVSS Score
Published: March 26, 2026 at 02:31 PM UTC
Updated: June 17, 2026 at 10:20 AM UTC
2 products affected across 2 vendorsEverestCore

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2026.02.0
Affected range stops below 2026.02.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/EVerest/EVerest/security/advisories/GHSA-wh8w-7cfc-gq7m

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121

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