The OCPP implementation in libocpp before 0.26.2 allows a denial of service (EVerest…
Priority MEDIUM 48CWE-392Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The OCPP implementation in libocpp before 0.26.2 allows a denial of service (EVerest crash) via JSON input larger than 255 characters, because a CiString<255> object is created with StringTooLarge set to Throw.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed libocpp (EVerest): 0.26.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA libocpp (EVerest) Fixed in 0.26.2
Timeline
- 2026-10-02 Threatist record created from CVE-2025-59398
- 2026-10-03 Alias added: GHSA-9j3x-w929-5ch3
References
Other 5
- https://github.com/EVerest/everest-core/issues/1152
- https://github.com/EVerest/everest-core/commit/253432ae7458ad0445f68f9d716086090c2be49c
- https://github.com/EVerest/libocpp/compare/v0.26.1...v0.26.2
- https://github.com/EVerest/libocpp/commit/fb391b4ff16a0a07150e5a8eebf0856fb6623cbe
- https://github.com/EVerest/libocpp/pull/1052
More EVerest vulnerabilities
- TI-2026-25456 EVerest: MQTT Switch-Phases Command Data Race Causing Charger State Corruptio CVSS 3.1HIGH 8.2
- TI-2024-24822 EVerest has an integer overflow in the "v2g_incoming_v2gtp" function CVSS 3.1CRITICAL 9.1
- TI-2026-18308 EVerest's unchecked SLAC payload length causes stack overflow in HomeplugMessage::setup_payload CVSS 3.1HIGH 8.8
- TI-2026-19334 EVerest has stack buffer overflow in ifreq.ifr_name when interface name exceeds IFNAMSIZ CVSS 3.1HIGH 8.4
- TI-2026-18154 EVerest has off-by-one stack buffer overflow in IsoMux certificate filename parsing CVSS 3.1HIGH 8.4
- TI-2025-41718 EVerest's Integer Overflow and Signed to Unsigned conversion lead to either stack buffer overflow or infinite loop CVSS 3.1HIGH 8.4
Sources
- CVE-2025-59398 · CVE Program
- CVE-2025-59398 · NVD
- FIRST EPSS
- GHSA-9j3x-w929-5ch3 · GitHub Advisory Database · CC BY 4.0
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