CVE-2021-36122Network attack vector

Arbitrary 7-Zip option injection via zippass

Published Jul 13, 2021 · Updated Aug 4, 2024

Command argument injection in Echo ShareCare 8.15.5 allows remote authenticated users to pass arbitrary arguments to 7z.exe. Access/EligFeedParse_Sup/UnzipFile_Upd.cfm passes the remote zippass value to the UnzipFile feature's 7z.exe invocation without neutralizing argument delimiters. A valid ShareCare session is required; the public record establishes arbitrary option injection but does not document resulting file access or code execution.

CVSS severity8.8
High
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command argument injection in Echo ShareCare 8.15.5 allows remote authenticated users to pass arbitrary arguments to 7z.exe. Access/EligFeedParse_Sup/UnzipFile_Upd.cfm passes the remote zippass value to the UnzipFile feature's 7z.exe invocation without neutralizing argument delimiters. A valid ShareCare session is required; the public record establishes arbitrary option injection but does not document resulting file access or code execution.

The record

CVE
CVE-2021-36122
Published
Jul 13, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-88
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

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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