CVE-2023-20227

A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

 This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.

 Note: Only traffic directed to the affected system can be used to exploit this vulnerability.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
ciscoCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 63%
VendorProductVersion
ciscoios_xe
16.8.1
ciscoios_xe
16.8.1a:a
ciscoios_xe
16.8.1b:b
ciscoios_xe
16.8.1c:c
ciscoios_xe
16.8.1d:d
ciscoios_xe
16.8.1e:e
ciscoios_xe
16.8.1s:s
ciscoios_xe
16.8.2
ciscoios_xe
16.8.3
ciscoios_xe
16.9.1
ciscoios_xe
16.9.1a:a
ciscoios_xe
16.9.1b:b
ciscoios_xe
16.9.1s:s
ciscoios_xe
16.9.2
ciscoios_xe
16.9.3
ciscoios_xe
16.9.4
ciscoios_xe
16.9.5
ciscoios_xe
16.9.5f:f
ciscoios_xe
16.9.6
ciscoios_xe
16.9.7
ciscoios_xe
16.9.8
ciscoios_xe
16.10.1
ciscoios_xe
16.10.1a:a
ciscoios_xe
16.10.1b:b
ciscoios_xe
16.10.1c:c
ciscoios_xe
16.10.1d:d
ciscoios_xe
16.10.1e:e
ciscoios_xe
16.10.1f:f
ciscoios_xe
16.10.1g:g
ciscoios_xe
16.10.1s:s
ciscoios_xe
16.10.2
ciscoios_xe
16.10.3
ciscoios_xe
16.11.1
ciscoios_xe
16.11.1a:a
ciscoios_xe
16.11.1b:b
ciscoios_xe
16.11.1s:s
ciscoios_xe
16.11.2
ciscoios_xe
16.12.1
ciscoios_xe
16.12.1a:a
ciscoios_xe
16.12.1c:c
ciscoios_xe
16.12.1s:s
ciscoios_xe
16.12.1t:t
ciscoios_xe
16.12.1w:w
ciscoios_xe
16.12.1x:x
ciscoios_xe
16.12.1y:y
ciscoios_xe
16.12.1z1:z1
ciscoios_xe
16.12.1z2:z2
ciscoios_xe
16.12.2
ciscoios_xe
16.12.2a:a
ciscoios_xe
16.12.2s:s
ciscoios_xe
16.12.3
ciscoios_xe
16.12.3s:s
ciscoios_xe
16.12.4
ciscoios_xe
16.12.4a:a
ciscoios_xe
16.12.5
ciscoios_xe
16.12.5a:a
ciscoios_xe
16.12.6
ciscoios_xe
16.12.6a:a
ciscoios_xe
16.12.7
ciscoios_xe
16.12.8
ciscoios_xe
17.1.1
ciscoios_xe
17.1.1a:a
ciscoios_xe
17.1.1s:s
ciscoios_xe
17.1.1t:t
ciscoios_xe
17.1.3
ciscoios_xe
17.2.1
ciscoios_xe
17.2.1a:a
ciscoios_xe
17.2.1r:r
ciscoios_xe
17.2.1v:v
ciscoios_xe
17.2.2
ciscoios_xe
17.2.3
ciscoios_xe
17.3.1
ciscoios_xe
17.3.1a:a
ciscoios_xe
17.3.1w:w
ciscoios_xe
17.3.1x:x
ciscoios_xe
17.3.1z:z
ciscoios_xe
17.3.2
ciscoios_xe
17.3.2a:a
ciscoios_xe
17.3.3
ciscoios_xe
17.3.4
ciscoios_xe
17.3.4a:a
ciscoios_xe
17.3.4c:c
ciscoios_xe
17.3.5
ciscoios_xe
17.3.5a:a
ciscoios_xe
17.3.5b:b
ciscoios_xe
17.3.6
ciscoios_xe
17.3.7
ciscoios_xe
17.4.1
ciscoios_xe
17.4.1a:a
ciscoios_xe
17.4.1b:b
ciscoios_xe
17.4.2
ciscoios_xe
17.4.2a:a
ciscoios_xe
17.5.1
ciscoios_xe
17.5.1a:a
ciscoios_xe
17.5.1b:b
ciscoios_xe
17.5.1c:c
𝑥
= Vulnerable software versions
Common Weakness Enumeration