OS Command Injection in Comfast CF-N1-S firmware (CVE-2026-75364)
Summary
OS command injection in Comfast CF-N1-S firmware (CVE-2026-75364). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
Comfast CF-N1-S firmware 2.6.0.1 and CF-WR630AX (2024-01-30 build), the update_interface_png SET handler in /usr/bin/webmgnt fails to sanitize the display_name parameter. User-controlled input is concatenated via sprintf() into the unquoted shell command /etc/rrd/graphinterface %s %s and executed by system() with root privileges. A remote authenticated attacker can inject arbitrary commands
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-2026-75364 has been found in Comfast CF-N1-S firmware.
Successful exploitation can lead to full system takeover. CVSS score: 6.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Comfast CF-N1-S firmware CVE-2026-75364" on the vendor's site.
CVE-2026-75364 (Comfast CF-N1-S firmware) — CWE-78 / CVSS v3 6.8
Attack vector: adjacent-network / 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.
OS command injection (CWE-78) exists in Comfast CF-N1-S firmware.
Check the vendor advisory for the affected versions of Comfast CF-N1-S firmware.
Severity: Medium (CVSS 6.8/10). 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
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Comfast CF-N1-S firmware を使っているサービスとバージョンを洗い出す。
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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
- web nvd.nist.gov
- web github.com
- web github.com