CVE-2026-22593 EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing
An off-by-one error in EVerest allows attackers to trigger a stack buffer overflow via crafted filenames, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22593?
CVE-2026-22593 is a high-severity memory corruption vulnerability in everest-core, published on 26 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
EVerest is an EV charging software stack. Prior to version 2026.02.0, an off-by-one check in IsoMux certificate filename handling causes a stack-based buffer overflow when a filename length equals `MAX_FILE_NAME_LENGTH` (100). A crafted filename in the certificate directory can overflow `file_names[idx]`, corrupting stack state and enabling potential code execution. Version 2026.02.0 contains a patch.
Weakness: CWE-193
Which versions are affected by CVE-2026-22593?
It affects 1 product.
Products include Linuxfoundation Everest.
How do I fix CVE-2026-22593?
No fix has been published for CVE-2026-22593 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22593 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22593 exists.
Other vulnerabilities in everest-core
- CVE-2026-22790 EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload
- CVE-2026-23995 EVerest has stack buffer overflow in ifreq.ifr_name when interface name exceeds IFNAMSIZ
- CVE-2025-68137 EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop
- CVE-2026-33009 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio
- CVE-2026-26008 EVerest has OOB via EVSE ID Indexing Mismatch in OCPP 2.0.1 UpdateAllowedEnergyTransferModes
Sources
Also known as GHSA-cpqf-mcqc-783m.