CVE-2025-20209
published 2025-03-12CVE-2025-20209: A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.51%
39.9th percentile
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets.
This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control plane UDP packets, resulting in a denial of service (DoS) condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Affected
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CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_cisco7.5HIGH
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Cisco
Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
vendor_cisco·2025-03-12·CVSS 7.5
CVE-2025-20209 [HIGH] CWE-770 Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets.
This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control plane UDP packets, resulting in a denial of service (DoS) condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advis
Cisco
Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2025-20209 Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
CVE-2025-20209: Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets. This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control plane UDP packets, resulting in a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no
CVSS: 3.1
CWE: CWE-770, CWE-770
Bug IDs: C
GHSA
GHSA-f769-hvjj-2wv2: A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to pr
ghsa_unreviewed·2025-03-12
CVE-2025-20209 [HIGH] CWE-770 GHSA-f769-hvjj-2wv2: A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to pr
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets.
This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control plane UDP packets, resulting in a denial of service (DoS) condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-03-12
Published