What’s Vulnerable › Vulnerabilities

CVE-1999-1231

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 1999-06-09 · updated 2026-06-16

Description

ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.

Affected products

• Ssh2: 2.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5 (+7)

References

• http://www.securityfocus.com/archive/1/14758
• https://exchange.xforce.ibmcloud.com/vulnerabilities/2276
• http://www.securityfocus.com/archive/1/14758
• https://exchange.xforce.ibmcloud.com/vulnerabilities/2276

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