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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00016.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Ericsson Packet Core Gateway (PCG) affected
Version Status Constraints
0 affected < 1.30

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.ericsson.com/en/about-us/security/psirt/cve-2026-25657 cve-icon cve-icon
History

Fri, 05 Jun 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title Ericsson Packet Core Gateway (PCG) - Improper Handling of Syntactically Invalid Structure Vulnerability
Weaknesses CWE-228
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: ERIC

Published:

Updated: 2026-06-05T11:03:02.273Z

Reserved: 2026-02-04T12:41:54.869Z

Link: CVE-2026-25657

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-05T12:16:37.750

Modified: 2026-06-05T12:16:37.750

Link: CVE-2026-25657

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T13:00:14Z

Weaknesses