CVE-2026-25657: packet core — Fix

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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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-228 CWE-228

Affected Products

Vendor	Product	Versions
ericsson	packet_core_gateway	< 1.30

References

Advisories & Patches

https://www.ericsson.com/en/about-us/security/psirt/cve-2026-25657

Frequently Asked Questions

What is CVE-2026-25657? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-25657? +

CVE-2026-25657 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0017, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-25657? +

CVE-2026-25657 affects products from ericsson, specifically: packet_core_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-25657? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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