CVE-2022-22510Network attack vector

Unauthenticated service interruption via crafted SNMP requests

Published Feb 2, 2022 · Updated Sep 17, 2024

Null pointer dereference in CODESYS PROFINET 4.2.0.0 allows remote attackers to interrupt CODESYS Control via crafted SNMP requests. The integrated SNMP server on UDP port 161 dereferences a null pointer while processing specific requests in generated PROFINET stack code. Exposure requires a project containing a PROFINET Controller or PROFINET Device whose protocol stack has been downloaded to a CODESYS Control runtime.

CVSS severity7.5
High
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in CODESYS PROFINET 4.2.0.0 allows remote attackers to interrupt CODESYS Control via crafted SNMP requests. The integrated SNMP server on UDP port 161 dereferences a null pointer while processing specific requests in generated PROFINET stack code. Exposure requires a project containing a PROFINET Controller or PROFINET Device whose protocol stack has been downloaded to a CODESYS Control runtime.

The record

CVE
CVE-2022-22510
Published
Feb 2, 2022
Updated
Sep 17, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5CODESYS GmbHCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application 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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