CVE-2021-20669Network attack vector

Arbitrary path read or deletion via crafted request

Published Mar 10, 2021 · Updated Aug 3, 2024

Path traversal in WESEEK, Inc. GROWI 4.2.2 and earlier allows remote authenticated users to read or delete arbitrary server paths. The vendor and JPCERT/CC have not published the affected endpoint or the path-handling operation that accepts traversal input. Administrator rights and a specially crafted network request are required; successful exploitation exposes or removes files reachable by the GROWI process.

CVSS severity6.2
Medium
EPSS probability0.76%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in WESEEK, Inc. GROWI 4.2.2 and earlier allows remote authenticated users to read or delete arbitrary server paths. The vendor and JPCERT/CC have not published the affected endpoint or the path-handling operation that accepts traversal input. Administrator rights and a specially crafted network request are required; successful exploitation exposes or removes files reachable by the GROWI process.

The record

CVE
CVE-2021-20669
Published
Mar 10, 2021
Updated
Aug 3, 2024
Vendor
WESEEK, Inc.
Product
GROWI
Classifications
CWE-22, T1005, T1070.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=versions v4.2.2 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WESEEK, Inc. · GROWIversion=versions v4.2.2 and earlier

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
6.2JPCERT/CCCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Path Traversal
T1005Data from Local System
T1070.004File Deletion

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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