How severe is CVE-2026-35225?

CVE-2026-35225 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-35225 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-35225?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-35225 have an EU (EUVD) identifier?

Yes. CVE-2026-35225 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25222.

When was CVE-2026-35225 published?

CVE-2026-35225 was published on 2026-04-23 and last updated on 2026-06-17.

CVE-2026-35225

CVE-2026-35225 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-754.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25222
Weakness: CWE-754
Published: 2026-04-23
Last modified: 2026-06-17

Description

An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.

Frequently asked questions

What is CVE-2026-35225?: An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.
How severe is CVE-2026-35225?: CVE-2026-35225 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-35225 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-35225?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-35225 have an EU (EUVD) identifier?: Yes. CVE-2026-35225 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25222.
When was CVE-2026-35225 published?: CVE-2026-35225 was published on 2026-04-23 and last updated on 2026-06-17.

References

Other CWE-754 (Improper Check for Unusual or Exceptional Conditions) vulnerabilities

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CVE-2024-7826 — Critical (CVSS 9.8): Improper Check for Unusual or Exceptional Conditions vulnerability in Webroot SecureAnywhere - Web Shield on Windows,…
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