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PatchSiren cyber security CVE debrief

CVE-2025-46412 Vertiv CVE debrief

CVE-2025-46412 is a critical Vertiv issue affecting Liebert RDU101 and Liebert IS-UNITY webserver functions. According to the CISA CSAF advisory, the affected products do not properly protect webserver functions, which could allow an attacker to bypass authentication. Vertiv provides fixes for the affected versions, and the issue was published on 2025-05-20.

Vendor
Vertiv
Product
Liebert RDU101
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-05-20
Original CVE updated
2025-05-20
Advisory published
2025-05-20
Advisory updated
2025-05-20

Who should care

OT/ICS operators using Vertiv Liebert RDU101 or Liebert IS-UNITY, especially teams responsible for remote management interfaces, network segmentation, patching, and asset inventory. Security teams should also prioritize any internet-exposed or broadly reachable management interfaces.

Technical summary

The advisory describes an authentication-bypass weakness in webserver functionality for Vertiv products. Affected versions are Vertiv Liebert RDU101 <= 1.9.0.0 and Vertiv Liebert IS-UNITY <= 8.4.1.0. The supplied CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, consistent with a network-reachable issue that can have high confidentiality, integrity, and availability impact. Vertiv lists fixed versions: Liebert RDU101 v1.9.1.2_0000001 and IS-UNITY v8.4.3.1_00160.

Defensive priority

Immediate. This is a critical, remotely reachable authentication-bypass issue with vendor fixes available and high potential impact in industrial environments.

Recommended defensive actions

  • Upgrade Vertiv Liebert RDU101 to v1.9.1.2_0000001.
  • Upgrade Vertiv Liebert IS-UNITY to v8.4.3.1_00160.
  • Restrict access to device web management interfaces to trusted administrative networks only.
  • Review exposure of affected management interfaces and remove any unnecessary internet or broad network reachability.
  • Validate asset inventory to confirm whether either affected product is deployed and at a vulnerable version.
  • Use Vertiv's security support center for vendor guidance and coordination.

Evidence notes

All claims above are drawn from the supplied CISA CSAF advisory for ICSA-25-140-10 and the embedded product/version and remediation fields. The advisory states that affected Vertiv products do not properly protect webserver functions that could allow an attacker to bypass authentication. The supplied enrichment marks the issue as not listed in CISA KEV. No exploitation details beyond the advisory text were provided in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-46412 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-46412

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

  • CVE-2025-46412 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-46412

    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/2025/icsa-25-140-10.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-140-10

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    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://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B

    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.