CVE-2026-90782CWE-476

CVE-2026-90782

Medium · published September 13, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
6.0 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00570 · 46.5th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-09-13T17:16Z
References (7)
https://gitlab.com/systerel/S2OPC · [email protected]https://gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.c#L106-L147 · [email protected]https://gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5 · [email protected]https://gitlab.com/systerel/S2OPC/-/issues/1815 · [email protected]https://gitlab.com/systerel/S2OPC/-/merge_requests/1862 · [email protected]https://www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-items · [email protected]https://gitlab.com/systerel/S2OPC/-/issues/1815 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 13 SEP 12:22Z
    S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items()
    cvelistv5