What is CVE-2022-29863?

CVE-2022-29863 is a high-severity vulnerability in Opcfoundation Ua .Net Standard Stack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-16.

How severe is CVE-2022-29863?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Opcfoundation Ua .Net Standard Stack

CVE-2022-29863

OPC UA .NET Standard Stack 1.04.368 allows remote attacker to cause a crash via a crafted message that triggers excessive memory allocation.

Published 2022-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: +0.001

Affected products

Opcfoundation Ua .Net Standard Stack

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

opcfoundation.org/security/ (Vendor Advisory)
files.opcfoundation.org/SecurityBulletins/OPC Foundation Security Bulletin CVE-… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-29863?: CVE-2022-29863 is a high-severity vulnerability in Opcfoundation Ua .Net Standard Stack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-16.
How severe is CVE-2022-29863?: High severity. CVSS v3 base score is 7.5 out of 10.