RCE in Topsec Topacm
CVE-2026-4170
A weakness has been identified in Topsec TopACM 3.0. Affected by this vulnerability is an unknown functionality of the file /view/systemConfig/management/nmc_sync.php of the component HTTP Request Handler. Executing a manipulation of the argument template_path can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.043 (90.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.043 · change: +0.015
Affected products
- Topsec Topacm — versions 3.0
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- my.feishu.cn/docx/EAFFdhzoeodDxfxeazNcxBzCnRf (exploit)
Frequently asked questions
- What is CVE-2026-4170?
- CVE-2026-4170 is a critical-severity vulnerability in Topsec Topacm, classified under Command Injection. CVSS score: 9.8/10. Published 2026-03-16.
- How severe is CVE-2026-4170?
- Critical severity. CVSS v3 base score is 9.8 out of 10.