Technology · Systerel
Systerel S2OPC vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Systerel S2OPC: 0 in the last 7 days and 5 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-90782, was published on 13 September 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 1
- Exploited in the wild
- 0
About Systerel S2OPC
An open-source implementation of the OPC UA (IEC 62541) standard in C.
Latest Systerel S2OPC vulnerabilities
- CVE-2026-90782: S2OPC null pointer dereference in notification message allocationmediumCVSS 5.3EPSS 0.6%
- CVE-2026-82619: Systerel S2OPC use-after-free in monitored item event filtermediumCVSS 4.3EPSS 0.5%
- CVE-2026-82618: Systerel S2OPC out-of-bounds read in string array range writingmediumCVSS 4.3EPSS 0.5%
- CVE-2026-78049: Systerel S2OPC out-of-bounds read in AddNodes ServicelowCVSS 3.7EPSS 0.6%
- CVE-2026-67868: Systerel S2OPC heap-based buffer overflow in EventFilter handlingcriticalCVSS 9.8EPSS 1.1%
- CVE-2026-18790: Systerel S2OPC out-of-bounds read in DeleteMonitoredItemsResponse handlerlowCVSS 3.3EPSS 0.2%
- CVE-2026-18257: Systerel S2OPC Improper Certificate Validation in CycloneCryptomediumCVSS 5.6
- CVE-2026-9758: Systerel S2OPC Improper Certificate Validation in Trust List CheckhighCVSS 7.3
- CVE-2026-6899: Systerel S2OPC improper certificate revocation check in CycloneCryptomediumCVSS 5.6
Most severe Systerel S2OPC vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-67868: Systerel S2OPC heap-based buffer overflow in EventFilter handlingcriticalCVSS 9.8EPSS 1.1%
- CVE-2026-9758: Systerel S2OPC Improper Certificate Validation in Trust List CheckhighCVSS 7.3
- CVE-2026-18257: Systerel S2OPC Improper Certificate Validation in CycloneCryptomediumCVSS 5.6
- CVE-2026-6899: Systerel S2OPC improper certificate revocation check in CycloneCryptomediumCVSS 5.6
- CVE-2026-90782: S2OPC null pointer dereference in notification message allocationmediumCVSS 5.3EPSS 0.6%
- CVE-2026-82619: Systerel S2OPC use-after-free in monitored item event filtermediumCVSS 4.3EPSS 0.5%
- CVE-2026-82618: Systerel S2OPC out-of-bounds read in string array range writingmediumCVSS 4.3EPSS 0.5%
- CVE-2026-78049: Systerel S2OPC out-of-bounds read in AddNodes ServicelowCVSS 3.7EPSS 0.6%
- CVE-2026-18790: Systerel S2OPC out-of-bounds read in DeleteMonitoredItemsResponse handlerlowCVSS 3.3EPSS 0.2%
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 | 2 | 1 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 2 | 0 | |
| 7 Sep 2026 | 1 | 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 Systerel S2OPC vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/s2opc)<a href="https://junglewise.ai/threats/technologies/s2opc"><img src="https://junglewise.ai/threats/technologies/s2opc/badge.svg" alt="Systerel S2OPC 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/s2opc.json, and this page as text at https://junglewise.ai/threats/technologies/s2opc.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, "Systerel S2OPC vulnerabilities", https://junglewise.ai/threats/technologies/s2opc, 9 November 2026.