MEDIUM KEV
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
Published Feb 13, 2005 ·Due Jun 9, 2023
5.9
MEDIUMCVSS 3.1
EPSS 4.84%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
5.9 MEDIUM NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
Listed in CISA KEV KEV
Date Added
May 19, 2023
Patch Due
Jun 9, 2023
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Feb 7, 2025 · SSVC 2.0.3
4.84% 0.04840
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04840
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.84% (0.04840) | 91.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.19% (0.05187) | 91.37th | v5 (v2026.06.15) |
| Apr 21, 2026 | 2.41% (0.02411) | 85.12th | v4 (v2025.03.14) |
| Jun 6, 2025 | 1.26% (0.01257) | 78.39th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.51% (0.02515) | 84.01th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.97% (0.08970) | 87.52th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.51% (0.02515) | 84.33th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.35% (0.06350) | 93.59th | v3 (v2023.03.01) |
| Jun 28, 2024 | 1.57% (0.01575) | 87.41th | v3 (v2023.03.01) |
| Jan 21, 2024 | 1.66% (0.01664) | 86.31th | v3 (v2023.03.01) |
| Jul 8, 2023 | 1.80% (0.01795) | 86.45th | v3 (v2023.03.01) |
| May 20, 2023 | 2.39% (0.02391) | 88.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.15% (0.02150) | 87.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://secunia.com/advisories/12395/ third-party-advisoryx_refsource_SECUNIABroken LinkVendor Advisory
- http://securitytracker.com/id?1011079 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml vendor-advisoryx_refsource_CISCONot ApplicableVendor Advisory
- http://www.kb.cert.org/vuls/id/384230 third-party-advisoryx_refsource_CERT-VNPatchThird Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/11060 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17131 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/12395/ | third-party-advisoryx_refsource_SECUNIABroken LinkVendor Advisory | |
| http://securitytracker.com/id?1011079 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.cisco.com/warp/public/707/cisco-sa-20040827-telnet.shtml | vendor-advisoryx_refsource_CISCONot ApplicableVendor Advisory | |
| http://www.kb.cert.org/vuls/id/384230 | third-party-advisoryx_refsource_CERT-VNPatchThird Party AdvisoryUS Government Resource | |
| http://www.securityfocus.com/bid/11060 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/17131 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2004-1464 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 13, 2005
Updated Oct 22, 2025
Reserved Feb 13, 2005
Link CVE-2004-1464
CISA Vulnrichment
Updated Feb 7, 2025