MEDIUM

CVE-2026-90782

2026-09-13 CVSS v3.1

CVSS

5.3

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.

Weakness (CWE)

CWE-476 NULL Pointer Dereference

EPSS Score

0.32%

Probability of exploitation in next 30 days

25.2th percentile

References

https://gitlab.com/systerel/S2OPC https://gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.c#L106-L147 https://gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5 https://gitlab.com/systerel/S2OPC/-/issues/1815 https://gitlab.com/systerel/S2OPC/-/merge_requests/1862 https://www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-items

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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