CVE-2026-33009 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio
A data race in EVerest EV charging software allows concurrent access to shared contexts, potentially causing memory corruption or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33009?
CVE-2026-33009 is a high-severity vulnerability in everest-core, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
EVerest is an EV charging software stack. Versions prior to 2026.02.0 have a data race leading to C++ UB (potential memory corruption). This is triggered by an MQTT `everest_external/nodered/{connector}/cmd/switch_three_phases_while_charging` message and results in `Charger::shared_context` / `internal_context` accessed concurrently without lock. Version 2026.02.0 contains a patch.
Weakness: CWE-362
Which versions are affected by CVE-2026-33009?
It affects 1 product.
Products include Linuxfoundation Everest.
How do I fix CVE-2026-33009?
No fix has been published for CVE-2026-33009 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-33009 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33009 exists.
Other vulnerabilities in everest-core
- CVE-2026-22790 EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload
- CVE-2026-22593 EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing
- 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-2026-26008 EVerest has OOB via EVSE ID Indexing Mismatch in OCPP 2.0.1 UpdateAllowedEnergyTransferModes
Sources
Also known as GHSA-33qh-fg6f-jjx5.