CVE-2021-32503Network attack vector

Authenticated web-server crash via oversized endpoint parameters

Published Apr 1, 2022 · Updated Aug 3, 2024

Uncontrolled resource consumption in SICK AG FTMg firmware before 2.8 allows remote authenticated users to crash the embedded web server. Oversized values supplied to web endpoint parameters fill a buffer until the web service terminates. Maintenance-level privileges are required, and sensor measurement continues after the web server crashes.

CVSS severity5.8
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in SICK AG FTMg firmware before 2.8 allows remote authenticated users to crash the embedded web server. Oversized values supplied to web endpoint parameters fill a buffer until the web service terminates. Maintenance-level privileges are required, and sensor measurement continues after the web server crashes.

The record

CVE
CVE-2021-32503
Published
Apr 1, 2022
Updated
Aug 3, 2024
Vendor
SICK AG
Product
FTMg
Classifications
CWE-400, CWE-862, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 1, 2022CVE 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=All versions before 2.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SICK AG · FTMgversion=All versions before 2.8

Published CVSS scores

5.8SICK AGCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
4.0NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
4.9NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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-400Uncontrolled Resource Consumption
CWE-862Missing Authorization
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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