Vulnerability in Airmax Ac Firmware (CVE-2026-21639)
Summary
Vulnerability in Airmax Ac Firmware (CVE-2026-21639). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.
Affected Products:
airMAX AC (Version 8.7.20 and earlier)
airMAX M (Version 6.3.22 and earlier)
airFiber AF60-XG (Version 1.2.2 and earlier)
airFiber AF60 (Version 2.6.7 and earlier)
Mitigation:
Update your airMAX AC to Version 8.7.21 or later.
Update your airMAX M to Version 6.3.24 or later.
Update your airFiber AF60-XG to Version 1.2.3 or later.
Update your airFiber AF60 to Version 2.6.8 or later.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-21639 has been found in Airmax Ac Firmware.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Airmax Ac Firmware CVE-2026-21639" on the vendor's site.
CVE-2026-21639 (Airmax Ac Firmware) — CWE-120 / CVSS v3 8.8
Attack vector: adjacent-network / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-120) exists in Airmax Ac Firmware.
Check the vendor advisory for the affected versions of Airmax Ac Firmware.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Airmax Ac Firmware を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- patch support@hackerone.com
- web nvd.nist.gov
- web github.com