High severity · published Mar 26, 2026
CVE-2026-27828
EVerest: ISO15118 session_setup use-after-free can crash EVSE process
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EV
everest-core · EVerest
< 2026.02.0 · source: vendor
EV
Everest · Linuxfoundation
before 2026.02.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27828
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27828
Mitigation
https://github.com/EVerest/EVerest/security/advisories/GHSA-5g3v-qc79-qqwr
More from everest-core
9.1
CVE-2026-27816
EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state
9.1
CVE-2026-27815
EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state
8.8
CVE-2026-22790
EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload
7.8
CVE-2026-23995
EVerest has stack buffer overflow in ifreq.ifr_name when interface name exceeds IFNAMSIZ
7.8
CVE-2026-22593
EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing