Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-9071— Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto

Quick assessment

Affected
Oberon microsystems AG Oberon PSA Crypto
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Oberon PSA Crypto library是瑞士Oberon公司的一款加密库。 Oberon PSA Crypto library 1.5.1及之前版本存在安全漏洞，该漏洞源于使用全零种子代替随机字节，可能导致RSA确定性加密，从而造成机密性丢失。

AI Predicted 7.5 Difficulty: Hard EPSS 0.18% · P6

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-9071

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto
Source: CVE Program / CVE List V5
Vulnerability Description
Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L
Source: CVE Program / CVE List V5
Vulnerability Type
未配合OAEP使用RSA算法
Source: CVE Program / CVE List V5
Vulnerability Title
Oberon PSA Crypto library 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Oberon PSA Crypto library是瑞士Oberon公司的一款加密库。 Oberon PSA Crypto library 1.5.1及之前版本存在安全漏洞，该漏洞源于使用全零种子代替随机字节，可能导致RSA确定性加密，从而造成机密性丢失。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Oberon microsystems AG Oberon PSA Crypto 1.0.0 ~ 1.5.1 -

II. Public POCs for CVE-2025-9071

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-9071

请登录查看更多情报信息。

Same Patch Batch · Oberon microsystems AG · 2025-08-29 · 3 CVEs total

CVE-2025-7383 Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in Oberon PSA
CVE-2025-7071 Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in ocrypto lib

IV. Related Vulnerabilities

Same product: Oberon PSA Crypto
Same vendor: Oberon microsystems AG
Same weakness: CWE-780

V. Comments for CVE-2025-9071

No comments yet

Leave a comment