Ericsson Packet Core Gateway up to 1.29 syntactically invalid structure

Summaryinfo

A vulnerability labeled as problematic has been found in Ericsson Packet Core Gateway up to 1.29. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to improper handling of syntactically invalid structure. This vulnerability is handled as CVE-2026-25657. The attack can only be done within the local network. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Ericsson Packet Core Gateway up to 1.29 and classified as problematic. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a improper handling of syntactically invalid structure vulnerability. The CWE definition for the vulnerability is CWE-228. The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification. As an impact it is known to affect availability. CVE summarizes:

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.

The weakness was released by Clemens Keil, Manfred Heinz and Patrick Walker. The advisory is shared for download at ericsson.com. This vulnerability was named CVE-2026-25657 since 02/04/2026. The exploitation appears to be easy. The attack needs to be done within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.30 eliminates this vulnerability.

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Productinfo

Vendor

• Ericsson

Name

• Packet Core Gateway

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

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• 🔒
• 🔒

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