CVE-2021-4473Tianxin Internet Behavior Management System contains a command injection vulnerability in the Reporter component endpoint that allows unauthenticated attackers to execute arbitrary commands by supply…
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It affects topsecgroup tianxin_internet_behavior_management_system. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Tianxin Internet Behavior Management System contains a command injection vulnerability in the Reporter component endpoint that allows unauthenticated attackers to execute arbitrary commands by supplying a crafted objClass parameter containing shell metacharacters and output redirection. Attackers can exploit this vulnerability to write malicious PHP files into the web root and achieve remote code execution with the privileges of the web server process. This vulnerability has been fixed in version NACFirmware_4.0.0.7_20210716.180815_topsec_0_basic.bin. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-06-01 (UTC).
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
topsecgroup tianxin_internet_behavior_management_system topsecgroup:tianxin_internet_behavior_management_system | before 4.0.0.7_20210716.180815 | NVD |
References
- https://avd.aliyun.com/detail?id=AVD-2021-890232third-party-advisory
- https://cn-sec.com/archives/4631959.htmlexploit, third-party-advisory
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-41972third-party-advisory
- https://www.cnvd.org.cn/patchInfo/show/280166patch
- https://www.vulncheck.com/advisories/tianxin-internet-behavior-management-system-command-injection-via-toquery-phpthird-party-advisory, vdb-entry
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.