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Vulnerability record · CVE-2021-20655 · published 17 February 2021

CVE-2021-20655: Soliton filezen os command injection vulnerability

Soliton · Filezen

FileZen (V3.0.0 to V4.2.7 and V5.0.0 to V5.0.2) allows a remote attacker with administrator rights to execute arbitrary OS commands via unspecified vectors.

7.2 CVSS 3.1 High EPSS 3.5% · top 11.1% CWE-78 · OS command injection
7.2CVSS 3.1 base score, v2 9.0
3.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

FileZen (V3.0.0 to V4.2.7 and V5.0.0 to V5.0.2) allows a remote attacker with administrator rights to execute arbitrary OS commands via unspecified vectors.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jvn.jp/en/jp/JVN58774946/index.html Third Party Advisory
https://www.soliton.co.jp/support/2021/004334.html ExploitVendor Advisory
https://jvn.jp/en/jp/JVN58774946/index.html Third Party Advisory
https://www.soliton.co.jp/support/2021/004334.html ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-25108FileZen OS command injection via Antivirus Check OptionFileZen contains an OS command injection flaw (CWE-78) that is reachable when the Antivirus Check Option is enabled. A logged-in user can send a spec…KEVEPSS 5.1%analysed9.8CVE-2020-5639Soliton filezen path traversal vulnerabilityDirectory traversal vulnerability in FileZen versions from V3.0.0 to V4.2.2 allows remote attackers to upload an arbitrary file in a specific directo…EPSS 5.1%9.8CVE-2018-0694Soliton filezen os command injection vulnerabilityFileZen V3.0.0 to V4.2.1 allows remote attackers to execute arbitrary OS commands via unspecified vectors.EPSS 2.4%7.5CVE-2018-0693Soliton filezen path traversal vulnerabilityDirectory traversal vulnerability in FileZen V3.0.0 to V4.2.1 allows remote attackers to upload an arbitrary file in the specific directory in FileZe…EPSS 1.9%8.8CVE-2026-53266Linux kernel ebtables SNAT out-of-bounds write in ARP rewriteThe ebtables SNAT target rewrites the ARP sender hardware address via skb_store_bits() without first making that range writable. When the ARP SHA byt…KEVEPSS 0.65%analysed8.8CVE-2026-87491Google Chrome V8 out-of-bounds write enables sandbox code executionChrome before 153.0.8010.36 contains an out-of-bounds write in the V8 JavaScript engine. A crafted HTML page can trigger the memory corruption, and b…KEVEPSS 3.1%analysed9.8CVE-2025-25249Fortinet FortiOS and FortiSwitchManager heap buffer overflow via crafted packetsA heap-based buffer overflow (CWE-122/CWE-787) in Fortinet FortiOS 6.4 through 7.6.3 and FortiSwitchManager 7.0 through 7.2.6 lets an unauthenticated…KEVEPSS 3.9%analysed7.8CVE-2026-83549SonicWall SMA1000 AMC OS Command InjectionThe SMA1000 Appliance Management Console contains an OS command injection flaw (CWE-78) that lets an authenticated administrator execute arbitrary op…KEVEPSS 11%analysed

Source: NIST National Vulnerability Database (record CVE-2021-20655), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.