CVE-2026-82618 Systerel S2OPC String Array Range Writing sopc_builtintypes.c set_range_matrix_on_string_array out-of-bounds
Remote attackers can trigger an out-of-bounds read in S2OPC, potentially exposing memory or causing crashes.
- 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-2026-82618?
CVE-2026-82618 is a medium-severity memory corruption 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 determined in Systerel S2OPC up to 1.7.3. The affected element is the function set_range_matrix_on_string_array of the file src/Common/opcua_types/sopc_builtintypes.c of the component String Array Range Writing. This manipulation causes out-of-bounds read. The attack is possible to be carried out remotely. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-82618?
How do I fix CVE-2026-82618?
No fix has been published for CVE-2026-82618 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-82618 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82618 exists.
Sources
Also known as GHSA-cpqm-m568-8qmx.