VULNERABILITY INTELLIGENCE

CVE-2001-1469

CVSS score5 MEDIUM

EPSS probability1.21%

CISA KEVNot currently listed

Published2001-01-18

Last modified2026-06-16

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.