8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.1%
A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
[
{
"product": "Cisco IOS and Cisco IOS-XE Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.16.0S"
},
{
"status": "affected",
"version": "3.16.1S"
},
{
"status": "affected",
"version": "3.16.0aS"
},
{
"status": "affected",
"version": "3.16.1aS"
},
{
"status": "affected",
"version": "3.16.2S"
},
{
"status": "affected",
"version": "3.16.2aS"
},
{
"status": "affected",
"version": "3.16.0bS"
},
{
"status": "affected",
"version": "3.16.0cS"
},
{
"status": "affected",
"version": "3.16.3S"
},
{
"status": "affected",
"version": "3.16.2bS"
},
{
"status": "affected",
"version": "3.16.3aS"
},
{
"status": "affected",
"version": "3.16.4S"
},
{
"status": "affected",
"version": "3.16.4aS"
},
{
"status": "affected",
"version": "3.16.4bS"
},
{
"status": "affected",
"version": "3.16.4gS"
},
{
"status": "affected",
"version": "3.16.5S"
},
{
"status": "affected",
"version": "3.16.4cS"
},
{
"status": "affected",
"version": "3.16.4dS"
},
{
"status": "affected",
"version": "3.16.4eS"
},
{
"status": "affected",
"version": "3.16.5aS"
},
{
"status": "affected",
"version": "3.17.0S"
},
{
"status": "affected",
"version": "3.17.1S"
},
{
"status": "affected",
"version": "3.17.2S"
},
{
"status": "affected",
"version": "3.17.1aS"
},
{
"status": "affected",
"version": "3.17.3S"
},
{
"status": "affected",
"version": "3.17.4S"
},
{
"status": "affected",
"version": "3.2.0JA"
},
{
"status": "affected",
"version": "16.2.1"
},
{
"status": "affected",
"version": "16.2.2"
},
{
"status": "affected",
"version": "16.3.1"
},
{
"status": "affected",
"version": "16.3.2"
},
{
"status": "affected",
"version": "16.3.3"
},
{
"status": "affected",
"version": "16.3.1a"
},
{
"status": "affected",
"version": "16.3.4"
},
{
"status": "affected",
"version": "16.4.1"
},
{
"status": "affected",
"version": "16.4.2"
},
{
"status": "affected",
"version": "16.4.3"
},
{
"status": "affected",
"version": "16.5.1"
},
{
"status": "affected",
"version": "16.5.1a"
},
{
"status": "affected",
"version": "16.5.1b"
},
{
"status": "affected",
"version": "3.18.0aS"
},
{
"status": "affected",
"version": "3.18.0S"
},
{
"status": "affected",
"version": "3.18.1S"
},
{
"status": "affected",
"version": "3.18.2S"
},
{
"status": "affected",
"version": "3.18.3S"
},
{
"status": "affected",
"version": "3.18.4S"
},
{
"status": "affected",
"version": "3.18.0SP"
},
{
"status": "affected",
"version": "3.18.1SP"
},
{
"status": "affected",
"version": "3.18.1aSP"
},
{
"status": "affected",
"version": "3.18.1gSP"
},
{
"status": "affected",
"version": "3.18.1bSP"
},
{
"status": "affected",
"version": "3.18.1cSP"
},
{
"status": "affected",
"version": "3.18.2SP"
},
{
"status": "affected",
"version": "3.18.1hSP"
},
{
"status": "affected",
"version": "3.18.2aSP"
},
{
"status": "affected",
"version": "3.18.1iSP"
}
]
}
]
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.1%