CVE-2026-82619 Systerel S2OPC subscription_mgr.c use after free
Remote attackers can trigger a use-after-free in S2OPC's subscription manager, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82619?
CVE-2026-82619 is a medium-severity use after free vulnerability in Systerel S2OPC, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Systerel S2OPC up to 1.7.3. The impacted element is the function monitored_item_event_filter_treatment_bs__init_event_filter_ctx_and_result of the file src/ClientServer/services/bgenc/subscription_mgr.c. Such manipulation of the argument EventFilter leads to use after free. The attack may be performed from remote. The exploit is publicly available and might be used. The name of the patch is a4cee16a851b971be447a6ed531173702c722b99. It is best practice to apply a patch to resolve this issue.
Which versions are affected by CVE-2026-82619?
How do I fix CVE-2026-82619?
No fix has been published for CVE-2026-82619 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-82619 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82619 exists.
Sources
Also known as GHSA-x4v2-7pqm-v4jq.