CVE-2026-25657
Analyzed Analyzed - Analysis Complete
Ericsson Packet Core Gateway Service Degradation Vulnerability

Publication date: 2026-06-05

Last updated on: 2026-06-08

Assigner: Ericsson

Description
Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.
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Meta Information
Published
2026-06-05
Last Modified
2026-06-08
Generated
2026-06-25
AI Q&A
2026-06-05
EPSS Evaluated
2026-06-24
NVD
CVE-2026-25657
EUVD
EUVD-2026-34821
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
ericsson packet_core_gateway to 1.30 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-228 The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.
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Executive Summary

The vulnerability in Ericsson Packet Core Gateway (PCG) versions prior to 1.30 is an Improper Handling of Syntactically Invalid Structure (CWE-228).

An attacker can exploit this by continuously sending specially crafted messages that the system does not properly handle.

This causes service degradation while the attack persists, but the system recovers once the attack stops.

Impact Analysis

This vulnerability can cause service degradation in the Ericsson Packet Core Gateway, potentially disrupting normal operations.

The impact lasts as long as the attacker continues the exploit, but the system recovers after the attack ends.

Mitigation Strategies

To mitigate this vulnerability, you should update the Ericsson Packet Core Gateway to version 1.30 or later, as Ericsson has released an update addressing this security issue.

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