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CVE-2026-25658 Ericsson CVE debrief

CVE-2026-25658 is a HIGH-severity vulnerability in Ericsson's Packet Core Gateway (PCG) versions prior to 1.30. The issue is an Improper Handling of Missing Values (CWE-230) that can cause service degradation when an attacker continuously sends specially crafted messages. The impact persists as long as the attack continues but the system recovers once the attack stops.

Vendor
Ericsson
Product
Packet Core Gateway
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-08
Advisory published
2026-06-05
Advisory updated
2026-06-08

Who should care

Administrators and security teams responsible for Ericsson Packet Core Gateway systems should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability exists in Ericsson Packet Core Gateway (PCG) versions prior to 1.30. An attacker can exploit this Improper Handling of Missing Values (CWE-230) vulnerability by continuously sending specially crafted messages, leading to service degradation. The system recovers when the attack stops.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to Ericsson Packet Core Gateway version 1.30 or later.
  • Implement network monitoring to detect and block suspicious traffic.
  • Follow Ericsson's official guidance on mitigating this vulnerability, available at [ref-4](https://www.ericsson.com/en/about-us/security/psirt/cve-2026-25658).

Evidence notes

The CVE-2026-25658 details were obtained from the official CVE record [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-25658) and NVD [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-25658).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-25658 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-25658

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-25658 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-25658

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://www.ericsson.com/en/about-us/security/psirt/cve-2026-25658

    85b1779b-6ecd-4f52-bcc5-73eac4659dcf - Vendor Advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.