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CVE-2004-1464: Cisco IOS Denial-of-Service Vulnerability

criticalknown exploitedCVE-2004-1464
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Ciscoproduct: IOSDenial of service
What
There is an unspecified vulnerability that may block further access to the Cisco device via various protocols.
Who is affected
Deployments of Cisco IOS are affected.
Urgency
Remediation is urgent due to the critical severity and confirmed exploitation.
Action
Users should apply the latest patches for Cisco IOS.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-05-19
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2004-1464

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2004-1464coverage & exploitation statusNVD · CVE.org

Recent advisories for Cisco IOS Denial-of-Service

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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