Is CVE-2004-1464 in the CISA KEV catalog?

Yes. CVE-2004-1464 is on the CISA Known Exploited Vulnerabilities list, added 2023-05-19.

What is the CVSS severity of CVE-2004-1464?

CVE-2004-1464 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2004-1464?

CVE-2004-1464 has an EPSS score of 5.13% (91th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2004-1464

MEDIUMCISA KEVEPSS 91th pctl

5.9

CVSS v3

NVD

Description

Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafted TCP connection to the Telnet or reverse Telnet port.

CWE-400Resource Exhaustion

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

5.13%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Cisco IOS Denial-of-Service Vulnerability

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.

Apply updates per vendor instructions.

Remediation due: 2023-06-09

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.