CVE-2021-21907Public exploitNetwork attack vector

Authenticated file disclosure via unsanitized getenv key

Published Dec 22, 2021 · Updated Aug 3, 2024

Path traversal in the CMA CLI getenv command in Garrett Metal Detectors iC Module CMA 5.0 allows remote authenticated users to read files. The getEnv handler appends the unvalidated key to /ltrx_user/env/ and passes the resulting path to readfile, allowing ../ sequences to escape that directory. Access requires authentication to the TCP 6877 CLI, and disclosure is limited to files no larger than 396 bytes because longer reads corrupt the stack and crash the process.

CVSS severity4.9
Medium
EPSS probability1.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the CMA CLI getenv command in Garrett Metal Detectors iC Module CMA 5.0 allows remote authenticated users to read files. The getEnv handler appends the unvalidated key to /ltrx_user/env/ and passes the resulting path to readfile, allowing ../ sequences to escape that directory. Access requires authentication to the TCP 6877 CLI, and disclosure is limited to files no larger than 396 bytes because longer reads corrupt the stack and crash the process.

The record

CVE
CVE-2021-21907
Published
Dec 22, 2021
Updated
Aug 3, 2024
Vendor
Garrett Metal Detectors
Product
iC Module CMA
Classifications
CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 22, 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=Garrett Metal Detectors iC Module CMA Version 5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Garrett Metal Detectors · iC Module CMAversion=Garrett Metal Detectors iC Module CMA Version 5.0

Published CVSS scores

4.9Cisco TalosCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

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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