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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-05

Last Modified

2026-06-08

Generated

2026-07-15

AI Q&A

2026-06-05

EPSS Evaluated

2026-07-14

NVD

CVE-2026-25657

EUVD

EUVD-2026-34821

Affected Vendors & Products

Vendor	Product	Version / Range
ericsson	packet_core_gateway	to 1.30 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

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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