Use After Free in Everest Everest-Core
CVE-2026-27828
EVerest is an EV charging software stack. Prior to version 2026.02.0, ISO15118_chargerImpl::handle_session_setup uses v2g_ctx after it has been freed when ISO15118 initialization fails (e.g., no IPv6 link-local address). The EVSE process can be crashed remotely by an attacker with MQTT access who issues a session_setup command while v2g_ctx has been released. Version 2026.02.0 contains a patch.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Everest Everest-Core — versions < 2026.02.0
- Linuxfoundation Everest
Weakness classification (CWE)
References
- github.com/EVerest/EVerest/security/advisories/GHSA-5g3v-qc79-qqwr (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-27828?
- CVE-2026-27828 is a high-severity vulnerability in Everest Everest-Core, classified under Use After Free. CVSS score: 7.5/10. Published 2026-03-26.
- How severe is CVE-2026-27828?
- High severity. CVSS v3 base score is 7.5 out of 10.