What is CVE-2026-27814?

CVE-2026-27814 is a medium-severity vulnerability in Everest Everest-Core, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.2/10. Published 2026-03-26.

How severe is CVE-2026-27814?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Everest Everest-Core

CVE-2026-27814

EVerest is an EV charging software stack. Versions prior to 2026.02.0 have a data race (C++ UB) triggered by an A 1-phase ↔ 3-phase switch request (`ac_switch_three_phases_while_charging`) during charging/waiting executes concurrently with the state machine loop. Version 2026.02.0 contains a patch.

Vulnerability class: Race Condition

Published 2026-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (3.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Everest Everest-Core — versions < 2026.02.0
Linuxfoundation Everest

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

github.com/EVerest/EVerest/security/advisories/GHSA-5528-wc53-v557 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-27814?: CVE-2026-27814 is a medium-severity vulnerability in Everest Everest-Core, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.2/10. Published 2026-03-26.
How severe is CVE-2026-27814?: Medium severity. CVSS v3 base score is 4.2 out of 10.