CVE-2022-45920Network attack vector

Service interruption via CreateMonitoredItems memory leak

Published Jan 25, 2023 · Updated Apr 1, 2025

Memory leak in Softing uaToolkit Embedded 1.30 through 1.40 allows remote attackers to consume memory via malformed OPC UA requests. The CreateMonitoredItems handler fails to release memory while processing malformed event monitored items, although Softing has not disclosed the allocation or cleanup path. Unauthenticated network access reaches affected uaToolkit servers that implement subscriptions and event monitored items; Nano Profile configurations are unaffected, and smartLink HW-DP 1.30 and earlier is also affected.

CVSS severity7.5
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leak in Softing uaToolkit Embedded 1.30 through 1.40 allows remote attackers to consume memory via malformed OPC UA requests. The CreateMonitoredItems handler fails to release memory while processing malformed event monitored items, although Softing has not disclosed the allocation or cleanup path. Unauthenticated network access reaches affected uaToolkit servers that implement subscriptions and event monitored items; Nano Profile configurations are unaffected, and smartLink HW-DP 1.30 and earlier is also affected.

The record

CVE
CVE-2022-45920
Published
Jan 25, 2023
Updated
Apr 1, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

7.5Softing Industrial Automation 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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.003Application Exhaustion Flood

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo