How severe is CVE-2025-7383?

CVE-2025-7383 has a CVSS 4.0 base score of 5.9, rated medium severity.

Is CVE-2025-7383 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-7383?

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

Does CVE-2025-7383 have an EU (EUVD) identifier?

Yes. CVE-2025-7383 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26194.

When was CVE-2025-7383 published?

CVE-2025-7383 was published on 2025-08-29 and last updated on 2026-06-17.

CVE-2025-7383

CVE-2025-7383 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.9. 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-208.

Key facts

Severity: Medium (CVSS 4.0 base score 5.9)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26194
Weakness: CWE-208
Published: 2025-08-29
Last modified: 2026-06-17

Description

Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 1.5.1 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.

Frequently asked questions

What is CVE-2025-7383?: Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 1.5.1 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.
How severe is CVE-2025-7383?: CVE-2025-7383 has a CVSS 4.0 base score of 5.9, rated medium severity.
Is CVE-2025-7383 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-7383?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-7383 have an EU (EUVD) identifier?: Yes. CVE-2025-7383 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26194.
When was CVE-2025-7383 published?: CVE-2025-7383 was published on 2025-08-29 and last updated on 2026-06-17.

References

https://www.oberon.ch/security-advisories/cve-2025-7383/

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