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CVE Vulnerability Details :

CVE-2025-7071

PUBLISHED

More Info Official Page

Assigner-NCSC.ch

Assigner Org ID-455daabc-a392-441d-aa46-37d35189897c

Published At-29 Aug, 2025 | 09:18

Updated At-29 Aug, 2025 | 12:07

▼CVE Numbering Authority (CNA)

Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in ocrypto library

Padding oracle attack vulnerability in Oberon microsystem AG’s ocrypto library in all versions since 3.1.0 and prior to 3.9.2 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.

Affected Products

Vendor

Oberon microsystems AG

Product

ocrypto

Modules

AES-CBC with PKCS#7 padding

Default Status

unaffected

Versions

Affected

From 3.1.0 through 3.9.1 (custom)

Problem Types

Type	CWE ID	Description
CWE	CWE-208	CWE-208 Observable Timing Discrepancy
CWE	CWE-327	CWE-327 Use of a Broken or Risky Cryptographic Algorithm

Metrics

Version	Base score	Base severity	Vector
4.0	5.9	MEDIUM	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Impacts

CAPEC ID	Description
CAPEC-463	CAPEC-463 Padding Oracle Crypto Attack

Solutions

Affected users should upgrade to ocrypto 3.9.2 or later.

References

Hyperlink	Resource
https://www.oberon.ch/security-advisories/cve-2025-7071/	N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References