CVE-2004-1464
Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY ...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2004-1464- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List
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.
- Record
CVE-2004-1464- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2004-1458
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.
- Record
EUVD-2004-1458- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7757-mj68-c29v
Cisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY ...
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.
- Record
GHSA-7757-mj68-c29v- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
CISA KEV No score
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.
- Record
CVE-2004-1464- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2004-1464 is a medium vulnerability (CVSS 5.9) in Cisco Ios, published December 31, 2004. CISA lists it as known to be exploited, since May 19, 2023. EUVD reports exploitation since May 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.84%, the 92nd percentile. No source names a fixed version.
References
exchange.xforce.ibmcloud.com/vulnerabilities/17131
securitytracker.com/id?1011079
kb.cert.org/vuls/id/384230
secunia.com/advisories/12395
cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml
securityfocus.com/bid/11060
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464
nvd.nist.gov/vuln/detail/CVE-2004-1464
github.com/advisories/GHSA-7757-mj68-c29v