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Findings

CVE-2026-27650

OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products.

Published Mar 27, 2026 · corrected/updated Jun 17, 2026 · buffalo wcr-1166dhpl firmware · evidence confidence medium

OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-27650 is a high public vulnerability record for buffalo wcr-1166dhpl firmware. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether buffalo wcr-1166dhpl firmware is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: buffalo/wcr-1166dhpl firmware; buffalo/wsr3600be4-kh firmware; buffalo/wsr3600be4p firmware; buffalo/wxr-1750dhp firmware. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 8.6. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-78. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 27, 2026 · NIST NVD

    Detected

    OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

  2. Jun 17, 2026 · NIST NVD

    Updated

    OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

Affected

  • cpe buffalo/wcr-1166dhpl firmwareversion unspecified
  • cpe buffalo/wsr3600be4-kh firmwareversion unspecified
  • cpe buffalo/wsr3600be4p firmwareversion unspecified
  • cpe buffalo/wxr-1750dhp firmwareversion unspecified
  • cpe buffalo/wxr-1750dhp2 firmwareversion unspecified
  • cpe buffalo/wxr-1900dhp firmwareversion unspecified
  • cpe buffalo/wxr-1900dhp2 firmwareversion unspecified
  • cpe buffalo/wxr-1900dhp3 firmwareversion unspecified
  • cpe buffalo/wxr-5950ax12 firmwareversion unspecified
  • cpe buffalo/wxr-6000ax12b firmwareversion unspecified
  • cpe buffalo/wxr-6000ax12p firmwareversion unspecified
  • cpe buffalo/wxr18000be10p firmwareversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-27650

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-27650

    OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

    nvd.nist.gov

References