Westermo WeOS up to 5.23.x ESP Packet improper validation of syntactic correctness of input

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Westermo WeOS up to 5.23.x. This affects an unknown part of the component ESP Packet Handler. This manipulation causes improper validation of syntactic correctness of input. This vulnerability is registered as CVE-2025-46419. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Westermo WeOS up to 5.23.x. Affected by this vulnerability is an unknown functionality of the component ESP Packet Handler. The manipulation with an unknown input leads to a improper validation of syntactic correctness of input vulnerability. The CWE definition for the vulnerability is CWE-1286. The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax. As an impact it is known to affect availability. The summary by CVE is:

Westermo WeOS 5 through 5.23.0 allows a reboot via a malformed ESP packet.

It is possible to read the advisory at westermo.com. This vulnerability is known as CVE-2025-46419 since 04/24/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.24.0 eliminates this vulnerability. Applying the patch 87F4AD7F74C2BE69CA1B4C24F29B82EA is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-12150). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (MITRE): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of syntactic correctness of input
CWE: CWE-1286 / 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: 🔍

Upgrade: WeOS 5.24.0
Patch: 87F4AD7F74C2BE69CA1B4C24F29B82EA

Timelineinfo

04/24/2025 🔍
04/24/2025 +0 days 🔍
04/24/2025 +0 days 🔍
05/25/2025 +31 days 🔍

Sourcesinfo

Advisory: westermo.com
Status: Confirmed

CVE: CVE-2025-46419 (🔍)
GCVE (CVE): GCVE-0-2025-46419
GCVE (VulDB): GCVE-100-306055
EUVD: 🔍

Entryinfo

Created: 04/24/2025 08:35
Updated: 05/25/2025 02:19
Changes: 04/24/2025 08:35 (64), 04/24/2025 14:31 (1), 05/25/2025 02:19 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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