Overview
- 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.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.9
- Impact score
- 3.6
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:P
Known exploits
Data from CISA
- Vulnerability name
- Cisco IOS Denial-of-Service Vulnerability
- Exploit added on
- May 19, 2023
- Exploit action due
- Jun 9, 2023
- Required action
- Apply updates per vendor instructions.
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "38FF1890-4ED2-4190-8D9F-0DF93AD1C894",
"versionEndIncluding": "12.2\\(15\\)zj3"
}
],
"operator": "OR"
}
]
}
]