CVE-2023-20227
high-risk
Published 2023-09-27
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.
Do I need to act?
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0.36% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
60
/ 100
high-risk
Severity
29/34 · Critical
Exploitability
1/34 · Minimal
Exposure
30/34 · Critical