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PatchSiren cyber security CVE debrief

CVE-2025-57176 Unknown Vendor CVE debrief

CVE-2025-57176 affects Ceragon Networks / Siklu Communication EtherHaul and MultiHaul series microwave antennas. According to CISA advisory ICSA-26-069-04, the rfpiped service on TCP port 555 accepts unauthenticated file uploads to writable locations, and the upload packets protect only metadata while sending file contents in cleartext. Ceragon's guidance is to install the fixed firmware and keep management access on private, protected networks.

Vendor
Unknown Vendor
Product
Ceragon
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-10
Original CVE updated
2026-03-10
Advisory published
2026-03-10
Advisory updated
2026-03-10

Who should care

OT, telecom, and network teams responsible for Ceragon Siklu MultiHaul or EtherHaul deployments, especially where management access may be reachable outside trusted internal networks.

Technical summary

The advisory describes a network-reachable service, rfpiped, on TCP 555 that allows unauthenticated uploads without path validation. Because file contents are transmitted in cleartext and only metadata is weakly encrypted, a remote actor who can reach the service may place files in writable locations on affected appliances. CISA's product list includes affected MultiHaul and EtherHaul models, with fixed versions identified in the remediation guidance.

Defensive priority

High for any deployment with reachable management services. The issue requires no authentication and is exposed over the network, so systems with broad or public reachability should be prioritized for patching and access restriction.

Recommended defensive actions

  • Upgrade affected MultiHaul models to firmware R2.4.0.
  • Upgrade affected EtherHaul EH-8010FX to firmware R10.8.1.
  • Upgrade other affected EtherHaul models to firmware R7.7.12.
  • Restrict management IP addresses to private subnets and keep management networks behind firewalls, ACLs, or secure management domains.
  • Remove any public exposure of management interfaces and verify only approved administrative networks can reach TCP 555.
  • Follow Ceragon's authentication and access-control guidance for all affected radio units.

Evidence notes

Evidence comes from the CISA CSAF advisory ICSA-26-069-04 published on 2026-03-10 and its embedded remediation notes. The source states that rfpiped on TCP 555 allows unauthenticated file uploads, that upload contents are sent in cleartext, and that no path validation is performed. The advisory also lists fixed firmware versions and recommends private, protected management networks. No KEV entry or ransomware linkage is present in the supplied corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-57176 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-57176

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

  • CVE-2025-57176 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-57176

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

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-069-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-26-069-04.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-069-04

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

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.