CVE-2004-1464
Exploitation confirmed. First attested on 2023-05-19 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2004-12-31
- WeaknessCWE-400
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTCObserved activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2004-1464?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2004-1464?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 12.2 | ≤ 12.2\(15\)zj3 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- CISA’s required action: Apply updates per vendor instructions.due 2023-06-09
Advisories and patches
- secunia.comVendor Advisory
- www.cisco.comVendor Advisory
- www.kb.cert.orgPatch
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2023-05-19
- Patch Due Date
- 2023-06-09
- Ransomware Use
- Unknown
- Required Action
- Apply updates per vendor instructions.
Sources
- CISA KEVKEV entry2023-05-19
- GCVEexploitation2023-05-19
- CISA-ADPSSVC decisionactive2025-02-07
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.15.92025-02-07
- NVDCVSS 3.15.9read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CISA-ADPweakness (CWE)CWE-4002025-02-07
- NVDweakness (CWE)CWE-400read 2026-10-23
- FIRST EPSSEPSS score4.8 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2004-12-31
- Last Modified
- 2026-06-16
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2004-1464?
Is CVE-2004-1464 actively exploited?
What is the CVSS score for CVE-2004-1464?
Hear about the next vulnerability in your software
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.