CVE-2021-42262

6.5 MEDIUM 0.8% exploit odds Fix listed

What it is

An issue was discovered in Softing OPC UA C++ SDK before 5.70. An invalid XML element in the type dictionary makes the OPC/UA client crash due to an out-of-memory condition.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of service disruption.
Exploit odds: 0.8% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2022-03-11 23:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 04:09 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.8% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2022-03-11 23:15 UTC
Last modified: 2026-06-17 04:09 UTC
Exploit probability: 0.8% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

Softing Datafeed Opc Suite ≤ 5.19
Softing Opc Ua c\+\+ Software Development Kit < 5.70.0
Softing Secure Integration Server ≤ 1.22

Attack profile CVSS 3.1 · 6.5

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-42262.md and follow it. Check whether this project is affected by CVE-2021-42262. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record