Technology · Open62541 Project
Open62541 Project Open62541 vulnerabilities
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Junglewise Threat Intelligence has tracked 18 vulnerabilities in Open62541 Project Open62541: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-82623, was published on 31 August 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About Open62541 Project Open62541
An open source implementation of OPC UA (OPC Unified Architecture) written in C.
Latest Open62541 Project Open62541 vulnerabilities
- CVE-2026-82623: open62541 use-after-free in history backendmediumCVSS 5.3EPSS 0.7%
- CVE-2026-67862: open62541 heap-buffer-overflow in high-level attribute readinghighCVSS 7.5EPSS 0.6%
- CVE-2026-67861: open62541 stack overflow in UA_Client_getRemoteDataTypeshighCVSS 7.5EPSS 0.8%
- CVE-2026-67860: open62541 heap buffer overflow in HistoryRead continuation point handlinghighCVSS 7.5EPSS 0.5%
- CVE-2026-67859: open62541 buffer overflow in Discovery/LDS handlinghighCVSS 7.5EPSS 0.8%
- CVE-2026-67858: open62541 buffer overflow in Local Discovery Server multicast discoveryhighCVSS 7.5EPSS 0.9%
- CVE-2026-67857: open62541 out-of-bounds read in responseReadNamespacesArrayhighCVSS 7.5EPSS 0.6%
- CVE-2026-67856: open62541 denial of service via subscription requestshighCVSS 7.5EPSS 0.8%
- CVE-2026-67855: open62541 heap use-after-free in GDS PushManagement certificate updatehighCVSS 7.5EPSS 0.5%
- CVE-2026-18785: open62541 client stack overflow in UA_Client_getRemoteDataTypesmediumCVSS 5.3EPSS 0.2%
- CVE-2026-18784: open62541 heap buffer overflow in UA_Client_readNodeClassAttributemediumCVSS 5.3EPSS 0.2%
- CVE-2026-65423: o6 Automation open62541 integer overflow in UA_Variant arrayDimensionshighCVSS 8.8
- CVE-2026-63362: o6 Automation open62541 integer underflow in PubSub signature verificationmediumCVSS 5.9
- CVE-2026-63035: o6 Automation open62541 use-after-free in TransferSubscriptions servicehighCVSS 8.1
- CVE-2026-63559: o6 Automation open62541 integer overflow in UA_Variant arrayDimensionshighCVSS 7.5
- CVE-2026-15690: open62541 null pointer dereference in responseReadNamespacesArraylowCVSS 3.1
- CVE-2026-11946: open62541 memory exhaustion in GetEndpoints Discovery ServicehighCVSS 7.5
- CVE-2026-33592: open62541 memory exhaustion in FindServers Discovery ServicehighCVSS 7.5
Most severe Open62541 Project Open62541 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-65423: o6 Automation open62541 integer overflow in UA_Variant arrayDimensionshighCVSS 8.8
- CVE-2026-63035: o6 Automation open62541 use-after-free in TransferSubscriptions servicehighCVSS 8.1
- CVE-2026-67858: open62541 buffer overflow in Local Discovery Server multicast discoveryhighCVSS 7.5EPSS 0.9%
- CVE-2026-67859: open62541 buffer overflow in Discovery/LDS handlinghighCVSS 7.5EPSS 0.8%
- CVE-2026-67856: open62541 denial of service via subscription requestshighCVSS 7.5EPSS 0.8%
- CVE-2026-67861: open62541 stack overflow in UA_Client_getRemoteDataTypeshighCVSS 7.5EPSS 0.8%
- CVE-2026-67857: open62541 out-of-bounds read in responseReadNamespacesArrayhighCVSS 7.5EPSS 0.6%
- CVE-2026-67862: open62541 heap-buffer-overflow in high-level attribute readinghighCVSS 7.5EPSS 0.6%
- CVE-2026-67855: open62541 heap use-after-free in GDS PushManagement certificate updatehighCVSS 7.5EPSS 0.5%
- CVE-2026-67860: open62541 heap buffer overflow in HistoryRead continuation point handlinghighCVSS 7.5EPSS 0.5%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Open62541 Project Open62541 vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/open62541)<a href="https://junglewise.ai/threats/technologies/open62541"><img src="https://junglewise.ai/threats/technologies/open62541/badge.svg" alt="Open62541 Project Open62541 vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/open62541.json, and this page as text at https://junglewise.ai/threats/technologies/open62541.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Open62541 Project Open62541 vulnerabilities", https://junglewise.ai/threats/technologies/open62541, 9 November 2026.