CVE-2026-67863

A flaw was found in open62541. A server-side use-after-free vulnerability exists in the local MonitoredItem callback path. This occurs when the system attempts to use a notification object after it has been deallocated. A remote attacker can exploit this vulnerability to cause a denial of service...

EUVD-2026-53680

An issue in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the event monitored-item queue resize handling...

EUVD-2026-53669

Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMacProcessMsgDeleteMonitoredItemsResponse and SOPCStaMacNewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path...

EUVD-2026-53671

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UASubscriptionlocalPublish continues to use the current UANotification after a callback invokes UAServerdeleteMonitoredItem for the current local MonitoredItem. This allows a...

CVE-2026-67872: Uncontrolled Resource Consumption

An issue in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the event monitored-item queue resize handling...

DEBIAN-CVE-2026-67863

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UASubscriptionlocalPublish continues to use the current UANotification after a callback invokes UAServerdeleteMonitoredItem for the current local MonitoredItem. This allows a...

CVE-2026-67863

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UASubscriptionlocalPublish continues to use the current UANotification after a callback invokes UAServerdeleteMonitoredItem for the current local MonitoredItem. This allows a...

CVE-2026-67863

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UASubscriptionlocalPublish continues to use the current UANotification after a callback invokes UAServerdeleteMonitoredItem for the current local MonitoredItem. This allows a...

CVE-2026-67872

An issue in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the event monitored-item queue resize handling...

CVE-2026-67866

Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMacProcessMsgDeleteMonitoredItemsResponse and SOPCStaMacNewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path...

CVE-2026-67863

CVE-2026-67863 affects open62541 1.5.5, where a server-side use-after-free occurs in the local MonitoredItem callback path. The issue arises when UA_Subscription_localPublish continues to use the current UA_Notification after a callback invokes UA_Server_deleteMonitoredItem for the current local ...

CVE-2026-67863

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UASubscriptionlocalPublish continues to use the current UANotification after a callback invokes UAServerdeleteMonitoredItem for the current local MonitoredItem. This allows a...

CVE-2026-67866

Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMacProcessMsgDeleteMonitoredItemsResponse and SOPCStaMacNewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path...

CVE-2026-67872

An issue in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the event monitored-item queue resize handling...

CVE-2026-67856

An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItemsSampling, Publish, TransferSubscriptions, and DeleteSubscriptions requests...

CVE-2026-18790

A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMacProcessMsgDeleteMonitoredItemsResponse of the file src/ClientServer/frontend/clientwrapper/internal/statemachine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes...

CVE-2026-18790

A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMacProcessMsgDeleteMonitoredItemsResponse of the file src/ClientServer/frontend/clientwrapper/internal/statemachine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes...

CVE-2026-18790

Systerel S2OPC up to 1.7.3 contains a vulnerability in LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse (src/ClientServer/frontend/client_wrapper/internal/state_machine.c, DeleteMonitoredItemsRequest Handler). The flaw enables an out-of-bounds read and can be exploited locally. Public exploit...

CVE-2026-18790 Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds

A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMacProcessMsgDeleteMonitoredItemsResponse of the file src/ClientServer/frontend/clientwrapper/internal/statemachine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes...

CVE-2026-18790 Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds

A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMacProcessMsgDeleteMonitoredItemsResponse of the file src/ClientServer/frontend/clientwrapper/internal/statemachine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes...