How severe is CVE-2025-42978?

CVE-2025-42978 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-42978 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-42978?

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

Does CVE-2025-42978 have an EU (EUVD) identifier?

Yes. CVE-2025-42978 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20335.

When was CVE-2025-42978 published?

CVE-2025-42978 was published on 2025-07-08 and last updated on 2026-06-17.

CVE-2025-42978

CVE-2025-42978 is a low-severity vulnerability with a CVSS 3.x base score of 3.5. 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-940.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20335
Weakness: CWE-940
Published: 2025-07-08
Last modified: 2026-06-17

Description

The widely used component that establishes outbound TLS connections in SAP NetWeaver Application Server Java does not reliably match the hostname that is used for the connection against the wildcard hostname defined in the received certificate of remote TLS server. This might lead to the outbound connection being established to a possibly malicious remote TLS server and hence disclose information. Integrity and Availability are not impacted.

Frequently asked questions

What is CVE-2025-42978?: The widely used component that establishes outbound TLS connections in SAP NetWeaver Application Server Java does not reliably match the hostname that is used for the connection against the wildcard hostname defined in the received certificate of remote TLS server. This might lead to the outbound connection being established to a possibly malicious remote TLS server and hence disclose information. Integrity and Availability are not impacted.
How severe is CVE-2025-42978?: CVE-2025-42978 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-42978 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-42978?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-42978 have an EU (EUVD) identifier?: Yes. CVE-2025-42978 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20335.
When was CVE-2025-42978 published?: CVE-2025-42978 was published on 2025-07-08 and last updated on 2026-06-17.

References

Other CWE-940 vulnerabilities

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