What’s Vulnerable › Vulnerabilities

CVE-2001-1469

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2001-01-18 · updated 2026-06-16

Description

The RC4 stream cipher as used by SSH1 allows remote attackers to modify messages without detection by XORing the original message's cyclic redundancy check (CRC) with the CRC of a mask consisting of all the bits of the original message that were modified.

Affected products

• Ssh: 1.2.24, 1.2.25, 1.2.26, 1.2.27, 1.2.28, 1.2.29 (+2)

References

• http://www.kb.cert.org/vuls/id/25309
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6449
• http://www.kb.cert.org/vuls/id/25309
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6449

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