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CVE-2025-59398VulnerabilityPublished

CVE-2025-59398: EVerest libocpp · Missing Report of Error Condition

Affects EVerest libocppSource CVE Database V5

0

Not known to be exploited · CVSS 3.1 Low.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
3.1Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
EVerest libocppAffected
  • =0
Fixed in–

AI-suggested

To mitigate this vulnerability, European organizations should: 1) Upgrade libocpp to version 0.26.2 or later, where this issue is addressed. 2) Implement input validation and size checks on JSON payloads before processing to ensure they do not exceed expected limits, thereby preventing exceptions from being thrown. 3) Enhance error handling in the OCPP implementation to gracefully manage exceptions caused by oversized inputs, avoiding service crashes. 4) Deploy network-level protections such as firewalls or intrusion detection systems configured to detect and block anomalous or oversized JSON payloads targeting OCPP endpoints. 5) Monitor logs and application behavior for signs of repeated crashes or malformed input attempts, enabling early detection of exploitation attempts. 6) Where possible, restrict network access to OCPP services to trusted sources to reduce exposure to malicious inputs. These steps go beyond generic advice by focusing on proactive input validation, robust error handling, and network-level controls tailored to the OCPP protocol context.

Description

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.

References

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