CVE-2026-90782S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items()
Updated under an hour ago ()
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It affects Systerel S2OPC. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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S2OPC through 1.7.3 contains a null pointer dereference in msg_subscription_publish_bs__alloc_notification_message_items() where a failed allocation for DataChangeNotification is overwritten by a successful allocation for EventNotificationList. Attackers can trigger heap allocation failures on sessions with both data-change and event notifications to cause the server process to terminate.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Systerel S2OPC systerel:s2opc (from the name) | through 1.7.3; 8848f051eed069b107ae7cb16a346d6f6386a8f5 not affected | CNA record |
References
- https://gitlab.com/systerel/S2OPC/-/issues/1815issue-tracking
- https://gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5patch
- https://gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.c#L106-L147technical-description
- https://gitlab.com/systerel/S2OPCproduct
- https://gitlab.com/systerel/S2OPC/-/merge_requests/1862patch
- https://www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-itemsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.