Vulnerability Details CVE-2021-34697
A vulnerability in the Protection Against Distributed Denial of Service Attacks feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct denial of service (DoS) attacks to or through the affected device. This vulnerability is due to incorrect programming of the half-opened connections limit, TCP SYN flood limit, or TCP SYN cookie features when the features are configured in vulnerable releases of Cisco IOS XE Software. An attacker could exploit this vulnerability by attempting to flood traffic to or through the affected device. A successful exploit could allow the attacker to initiate a DoS attack to or through an affected device.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.6%
CVSS Severity
CVSS v3 Score 5.8
CVSS v2 Score 5.0
References
Products affected by CVE-2021-34697
-
cpe:2.3:o:cisco:ios_xe:17.3.1
-
cpe:2.3:o:cisco:ios_xe:17.3.1a
-
cpe:2.3:o:cisco:ios_xe:17.3.1w
-
cpe:2.3:o:cisco:ios_xe:17.3.1x
-
cpe:2.3:o:cisco:ios_xe:17.3.1z
-
cpe:2.3:o:cisco:ios_xe:17.3.2
-
cpe:2.3:o:cisco:ios_xe:17.3.2a