medium Known exploitedREV. 01
CVE-2004-1464Cisco routers — the management lines filled up
A crafted connection to the telnet port of Cisco's router software (IOS) occupies the virtual terminal lines, and further remote logins are refused. Releases 12.2(15) and earlier are affected, and other access paths go with it.
Read the risk
THE VITAL STATS- CVSS score
- 5.9/ 10 CVSS v3.1
- EPSS probability
- 5% Likelihood of exploitation
- Attack complexity
- High Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2004-12-31
- Added to KEV
- 2023-05-19
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- impact
- MITRE ATT&CK
- T1499
- Severity
- medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attacker needsNetwork access to the device's telnet or reverse telnet port.
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisorysecunia.comsecunia.com
- 04Vendor advisorycisco.comcisco.com
- 05Vendor advisorykb.cert.orgkb.cert.org
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.