Cisco IOS XE up to 17.14.1a IKEv1 undefined values

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco IOS XE. The affected element is an unknown function of the component IKEv1. Executing a manipulation can lead to improper handling of undefined values. This vulnerability appears as CVE-2025-20192. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS XE. This vulnerability affects some unknown functionality of the component IKEv1. The manipulation with an unknown input leads to a improper handling of undefined values vulnerability. The CWE definition for the vulnerability is CWE-232. The product does not handle or incorrectly handles when a value is not defined or supported for the associated parameter, field, or argument name. As an impact it is known to affect availability. CVE summarizes:

A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The attacker must have valid IKEv1 VPN credentials to exploit this vulnerability. This vulnerability is due to improper validation of IKEv1 phase 2 parameters before the IPsec security association creation request is handed off to the hardware cryptographic accelerator of an affected device. An attacker could exploit this vulnerability by sending crafted IKEv1 messages to the affected device. A successful exploit could allow the attacker to cause the device to reload.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability was named CVE-2025-20192 since 10/10/2024. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/07/2025).

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.7
CNA Vector (cisco): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper handling of undefined values
CWE: CWE-232 / CWE-229 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/10/2024 🔍
05/07/2025 +209 days 🔍
05/07/2025 +0 days 🔍
05/07/2025 +0 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-iosxe-ikev1-dos-XHk3HzFC
Status: Confirmed

CVE: CVE-2025-20192 (🔍)
GCVE (CVE): GCVE-0-2025-20192
GCVE (VulDB): GCVE-100-307918
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 05/07/2025 20:18
Changes: 05/07/2025 20:18 (64)
Complete: 🔍
Cache ID: 216::103

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