CVE-2021-27730Network attack vector

Administrative command manipulation via unsanitized admin.pl argument

Published Mar 2, 2021 · Updated Aug 3, 2024

Argument injection in Accellion FTA 9.12.432 and earlier allows remote authenticated users to alter an admin.pl invocation via crafted POST input. An administrator-only API endpoint passes insufficiently sanitized input into the local Perl admin.pl script, allowing an extra argument to be inserted. Administrative privileges are required; public sources do not disclose the specific admin.pl operation or downstream effect.

CVSS severity9.8
Critical
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in Accellion FTA 9.12.432 and earlier allows remote authenticated users to alter an admin.pl invocation via crafted POST input. An administrator-only API endpoint passes insufficiently sanitized input into the local Perl admin.pl script, allowing an extra argument to be inserted. Administrative privileges are required; public sources do not disclose the specific admin.pl operation or downstream effect.

The record

CVE
CVE-2021-27730
Published
Mar 2, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-74, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

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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