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.
- Vendor
- Cisco
- Product
- IOS
- CVSS
- 5.9
- EPSS (exploit probability)
- 4.8%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2004-1464 being exploited?
Yes. CISA added CVE-2004-1464 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 4.8% (scored November 12, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2004-1464 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Cisco IOS CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2008-4128 Cisco IOS 12.4 HTTP admin CSRF on the 871 Integrated Services Routerwrite-up | [ MEDIUM ] | 4.3 | 33.9% | |
| CVE-2018-0180 Cisco IOS Software Denial-of-Service Vulnerability | [ MEDIUM ] | 5.9 | 4.9% | |
| CVE-2018-0179 Cisco IOS Software Denial-of-Service Vulnerability | [ MEDIUM ] | 5.9 | 4.9% | |
| CVE-2018-0161 Cisco IOS Software Resource Management Errors Vulnerability | [ MEDIUM ] | 6.3 | 4.1% | |
| CVE-2018-0154 Cisco IOS Software Integrated Services Module for VPN Denial-of-Service Vulnerability | [ HIGH ] | 7.5 | 7.1% | |
| CVE-2017-6744 Cisco IOS Software SNMP Remote Code Execution Vulnerability | [ HIGH ] | 8.8 | 7.3% | |
| CVE-2017-12235 Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability | [ HIGH ] | 7.5 | 7.1% | |
| CVE-2017-12234 Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability | [ HIGH ] | 7.5 | 7.1% |