CVE-2025-20209
Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
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.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-10-10 CVE Reserved
- 2025-03-12 CVE Published
- 2025-03-12 CVE Updated
- 2025-03-13 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp | ||
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrike-9wYGpRGq |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.25 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.25" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.0 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.0" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.2.0 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.2.0" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.2.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.2.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.4.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.4.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.2.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.2.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.5.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.5.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.27 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.27" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.6.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.6.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.5.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.5.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.7.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.7.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.4.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.4.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.6.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.6.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.8.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.8.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.7.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.7.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.9.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.9.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.8.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.8.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.8.22 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.8.22" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.10.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.10.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.7.21 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.7.21" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.9.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.9.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.11.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.11.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.10.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.10.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 24.1.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "24.1.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.11.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.11.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 24.2.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "24.2.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 24.1.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "24.1.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 24.2.11 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "24.2.11" | en |
Affected
| ||||||