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.
CVE-2025-7383
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EG Risk
- —
- EPSS
- 0.3%
- KEV
- Not listed
Published
August 29, 2025
Last Modified
June 17, 2026
References (1)
- vulnerability@ncschttps://www.oberon.ch/security-advisories/cve-2025-7383/
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 30× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-06-08 15:36 UTCEG score recompute▲ 5.90
- 2026-06-08 15:36 UTCGHSA enrichment
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- 2026-05-21 09:00 UTCEG score recompute
- 2026-05-21 09:00 UTCGHSA enrichment
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Related CVEs(same CWE)
Same CWE
10 shownCWE-327
Frequently asked(5)
What is CVE-2025-7383?
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Dependency Blast Radius
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