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CVE-2001-0553

33
FAUCET Score

CVE-2001-0553 describes a critical authentication bypass vulnerability in SSH Secure Shell 3.0.0 on Unix systems. This flaw allows local attackers to gain unauthorized access to accounts, particularly those with short or "NP" (no password) fields, by exploiting improper password authentication to the sshd2 daemon. With a CVSS score of 7.2 (HIGH), the vulnerability poses a significant risk due to its local attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not actively exploited in the wild or listed on the KEV catalog, public exploit code exists (EDB-21021), and the CVE has garnered notable community discussion, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0CPE matchmatch criteria
cpe:2.3:a:ssh:secure_shell:3.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-21021 · Jul 21, 2001
This CVE's current EPSS score of 0.0134 is in the 85th percentile among its peer group of 3,237 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/bugtraq/2001-07/0486.html
ExploitPatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/6868
ciac.org / ciac/bulletins/l-121.shtml
kb.cert.org / vuls/id/737451
US Government Resource
osvdb.org / 586
securityfocus.com / bid/3078
ssh.com / products/ssh/exploit.cfm