Medium severity5.3NVD Advisory· Published Sep 13, 2026
CVE-2026-90782
CVE-2026-90782
Description
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.
Affected products
2Patches
Vulnerability mechanics
References
5- gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.cnvd
- gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5nvd
- gitlab.com/systerel/S2OPC/-/issues/1815nvd
- gitlab.com/systerel/S2OPC/-/merge_requests/1862nvd
- www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-itemsnvd
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