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PatchSiren cyber security CVE debrief

CVE-2025-59177 Ericsson CVE debrief

Ericsson Packet Core Controller (PCC) versions prior to 1.39 contain a vulnerability in Configuration Management, allowing an attacker to execute specifically crafted commands to reveal system secret through error messages. The vulnerability is classified as a Configuration Management issue, which could lead to potential command execution and system secret disclosure. Defenders should assess the exposure and potential impact on their systems, focusing on Configuration Management settings and system secret protection.

Vendor
Ericsson
Product
Ericsson Packet Core Controller (PCC)
CVSS
MEDIUM 6.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-27
Original CVE updated
2026-09-29
Advisory published
2026-07-27
Advisory updated
2026-09-29

Who should care

Defenders responsible for Ericsson Packet Core Controller (PCC) Configuration Management and system secret protection should assess exposure and potential impact.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact of the vulnerability in Ericsson Packet Core Controller (PCC) versions prior to 1.39, focusing on Configuration Management and system secret protection.

  • Verify Configuration Management settings to prevent potential command execution
  • Assess system secret protection to prevent potential disclosure

Technical summary

The vulnerability in Ericsson Packet Core Controller (PCC) versions prior to 1.39 allows an attacker to execute specifically crafted commands to reveal system secret through error messages. This is a Configuration Management issue that could lead to potential command execution and system secret disclosure. Defenders should prioritize verifying exposure and assessing potential impact, focusing on Configuration Management settings and system secret protection.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on Configuration Management and system secret protection.

Recommended defensive actions

  • Verify PCC version and assess exposure
  • Review Configuration Management settings and system secret protection
  • Consider upgrading to PCC version 1.39 or later

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Ericsson Packet Core Controller (PCC). The vulnerability is confirmed to exist in versions prior to 1.39, and defenders should verify exposure and assess potential impact. The source details are limited, and further verification is required to determine the full scope of the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-59177 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-59177

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

  • CVE-2025-59177 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-59177

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

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.ericsson.com/en/about-us/security/psirt/security-bulletin-pcc-july-2026

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

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.