Summary
generated automatically from NVD dataOpenSSL does not enable RSA blinding by default, so an attacker, local or remote, can recover a server's private key by measuring timing differences. The leaks come from the number of extra reductions in Montgomery reduction and from the use of different integer multiplication algorithms (Karatsuba versus normal). Affected products listed include OpenSSL 0.9.6 through 0.9.6d, OpenPKG 1.1 and 1.2, and stunnel 3.7 through 3.11. The CVSS v2.0 score is 5.0 (MEDIUM).
NVD description
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
EPSS · FIRST.org
7.1%probability of exploitation in the next 30 days
Higher than 94% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-11-02, recomputed daily by FIRST.org.
CVSS v2.0 Score
Information
- Published
- 31 mars 2003
- Updated
- 16 juin 2026
- Status
- Modified
- Source
- cve@mitre.org
Affected products
Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.
Weaknesses (CWE)
References (54)
- http://www.kb.cert.org/vuls/id/997481Third Party AdvisoryUS Government Resource
- + 39 more references on NVD
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