How severe is CVE-2025-59398?

CVE-2025-59398 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-59398 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59398?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-59398 have an EU (EUVD) identifier?

Yes. CVE-2025-59398 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29233.

When was CVE-2025-59398 published?

CVE-2025-59398 was published on 2025-09-15 and last updated on 2026-06-17.

CVE-2025-59398

CVE-2025-59398 is a low-severity vulnerability with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-392.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29233
Weakness: CWE-392
Published: 2025-09-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-59398?: 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.
How severe is CVE-2025-59398?: CVE-2025-59398 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-59398 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-59398?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59398 have an EU (EUVD) identifier?: Yes. CVE-2025-59398 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29233.
When was CVE-2025-59398 published?: CVE-2025-59398 was published on 2025-09-15 and last updated on 2026-06-17.

References

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