CVE-2004-1464VulnerabilityPublished 05/19/2023Updated 10/24/2026
CVE-2004-1464: Cisco IOS Denial-of-Service Vulnerability
Affects Cisco IOSSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 05/19/2023
- KEV deadline
- 06/09/2023
- EPSS
- 4.8% chance of exploitation in 30 days – higher than 91% of CVEs
What to do
CISA required action
Apply updates per vendor instructions.
Description
Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device.