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CVE-2000-1254

26
FAUCET Score

CVE-2000-1254 describes a critical vulnerability in OpenSSL versions prior to 0.9.6, specifically affecting the crypto/rsa/rsa_gen.c component. This flaw, rated 7.5 HIGH on the CVSS scale, stems from improper handling of C bitwise-shift operations exceeding expression size, making RSA key generation on 64-bit HP-UX platforms susceptible to cryptographic defeat. While the attack vector is network-based with low complexity and no user interaction, leading to high confidentiality impact, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.5CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.14%
Probability of exploitation in next 30 days
EPSS Percentile
86.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0314 is in the 76th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2000-1254Moderate

openssl: Mishandling C bitwise-shift operations making easier to bypass protection mechanisms

Jun 1, 2000

References

marc.info
git.openssl.org
www-01.ibm.com / support/docview.wss
openwall.com / lists/oss-security/2016/05/04/17
securityfocus.com / bid/90109
securitytracker.com / id/1035750