CVE-2001-1141

The Pseudo-Random Number Generator (PRNG) in SSLeay and OpenSSL before 0.9.6b allows attackers to use the output of small PRNG requests to determine the internal state information, which could be used by attackers to predict future pseudo-random numbers.

Published: 2001-07-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1141 is rated Moderate Risk (55.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 4.99%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.62% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-1141

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.37% 4.99% +3.62%
2 2025-05-07 1.21% 1.37% +0.16%
3 2025-03-30 — 1.21% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1141

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2001-1141

OS Trackers for CVE-2001-1141

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2001-1141

Affected software / configurations for CVE-2001-1141

Vendor Product Version Raw CPE
openssl openssl 0.9.1c cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
openssl openssl 0.9.2b cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*
openssl openssl 0.9.3 cpe:2.3:a:openssl:openssl:0.9.3:*:*:*:*:*:*:*
openssl openssl 0.9.4 cpe:2.3:a:openssl:openssl:0.9.4:*:*:*:*:*:*:*
openssl openssl 0.9.5 cpe:2.3:a:openssl:openssl:0.9.5:*:*:*:*:*:*:*
openssl openssl 0.9.6 cpe:2.3:a:openssl:openssl:0.9.6:*:*:*:*:*:*:*
openssl openssl 0.9.6a cpe:2.3:a:openssl:openssl:0.9.6a:*:*:*:*:*:*:*
ssleay ssleay 0.8.1 cpe:2.3:a:ssleay:ssleay:0.8.1:*:*:*:*:*:*:*
ssleay ssleay 0.9 cpe:2.3:a:ssleay:ssleay:0.9:*:*:*:*:*:*:*
ssleay ssleay 0.9.1 cpe:2.3:a:ssleay:ssleay:0.9.1:*:*:*:*:*:*:*

References for CVE-2001-1141

cvelogic Threat Intelligence