CVE-2026-82618: Out-of-Bounds Read in Systerel S2OPC
Description
CVE-2026-82618 is a medium severity vulnerability in Systerel S2OPC up to version 1.7.3. It involves an out-of-bounds read in the function set_range_matrix_on_string_array within the String Array Range Writing component. This flaw can be exploited remotely and was reported early to the project, which has not yet responded or issued a fix.
CVSS v4.0
Score 5.3medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-82618 affects Systerel S2OPC versions 1.7.0 through 1.7.3. It is caused by an out-of-bounds read in the function set_range_matrix_on_string_array located in src/Common/opcua_types/sopc_builtintypes.c. This function mishandles string array range writing, leading to memory access beyond intended bounds. The vulnerability can be triggered remotely without user interaction and requires low privileges. The project was notified early but has not provided a patch or official response.
Potential Impact
An attacker with network access and low privileges can remotely trigger an out-of-bounds read, potentially leading to information disclosure or application instability. The CVSS 3.1 base score is 5.3 (medium severity), reflecting the remote attack vector and low complexity but limited impact scope. No known exploits are reported in the wild.
Mitigation Recommendations
No official fix or patch is currently available. The vendor has not responded to the issue report. Users should monitor the vendor's advisories for updates and consider restricting network access to the affected component until a patch is released.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-cpqm-m568-8qmx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-82618"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a95a0fbacd9273b4947e43a
Added to database: 08/31/2026, 15:42:51 UTC
Last enriched: 09/09/2026, 10:53:28 UTC
Last updated: 10/14/2026, 18:48:24 UTC
Views: 46
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