What’s Vulnerable › Vulnerabilities

CVE-2001-1382

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-09-27 · updated 2026-06-16

Description

The "echo simulation" traffic analysis countermeasure in OpenSSH before 2.9.9p2 sends an additional echo packet after the password and carriage return is entered, which could allow remote attackers to determine that the countermeasure is being used.

Affected products

• OpenSSH: through 2.9.9p2

References

• http://www.openwall.com/Owl/CHANGES-stable.shtml
• http://www.osvdb.org/5408
• http://www.openwall.com/Owl/CHANGES-stable.shtml
• http://www.osvdb.org/5408

Get alerted when CVE-2001-1382 or the next vulnerability affects your stack