CVE-2025-7071 - CVE House
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Status published Medium CVE-2025-7071

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

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from Oberon microsystems AG

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CVE-2025-9071
Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto
Low 2.3
CVE-2025-7383
Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in Oberon PSA Crypto library
Medium 5.9

Affected Vendor

Oberon microsystems AG

View all reports →

Affected Software

ocrypto
Vulnerable Versions:
3.1.0

Timeline

Official Publish: August 29th, 2025
Last Modified: August 29th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-208 CWE-327

MITRE ATT&CK TTPs

T1040 Network Sniffing
Credential Access
T1552 Unsecured Credentials
Credential Access
T1557 Adversary-in-the-Middle
Collection
T1078 Valid Accounts
Persistence
T1041 Exfiltration Over C2 Channel
Exfiltration