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8 vulnerabilities by Systerel
CVE-2026-18790 (GCVE-0-2026-18790)
Vulnerability from nvd – Published: 2026-08-04 17:30 – Updated: 2026-08-04 19:51
VLAI
EPSS
VEX
Title
Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds
Summary
A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse of the file src/ClientServer/frontend/client_wrapper/internal/state_machine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes out-of-bounds read. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/385790 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/385790/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-18790 | third-party-advisory |
| https://vuldb.com/submit/857761 | third-party-advisory |
| https://github.com/gff-cw/information/issues/13 | issue-tracking |
| https://github.com/user-attachments/files/2890737… | exploit |
Impacted products
Credits
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CVE-2026-18257 (GCVE-0-2026-18257)
Vulnerability from nvd – Published: 2026-07-29 16:34 – Updated: 2026-07-29 18:04
VLAI
EPSS
VEX
Title
Improper Certificate Validation in S2OPC
Summary
Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-9758 (GCVE-0-2026-9758)
Vulnerability from nvd – Published: 2026-06-10 12:32 – Updated: 2026-06-10 13:54
VLAI
EPSS
VEX
Title
Improper Certificate Validation in S2OPC
Summary
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-6899 (GCVE-0-2026-6899)
Vulnerability from nvd – Published: 2026-06-09 08:39 – Updated: 2026-06-09 14:25
VLAI
EPSS
VEX
Title
Improper Check for Certificate Revocation in S2OPC
Summary
Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-18790 (GCVE-0-2026-18790)
Vulnerability from cvelistv5 – Published: 2026-08-04 17:30 – Updated: 2026-08-04 19:51
VLAI
EPSS
VEX
Title
Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds
Summary
A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse of the file src/ClientServer/frontend/client_wrapper/internal/state_machine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes out-of-bounds read. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/385790 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/385790/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-18790 | third-party-advisory |
| https://vuldb.com/submit/857761 | third-party-advisory |
| https://github.com/gff-cw/information/issues/13 | issue-tracking |
| https://github.com/user-attachments/files/2890737… | exploit |
Impacted products
Credits
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CVE-2026-18257 (GCVE-0-2026-18257)
Vulnerability from cvelistv5 – Published: 2026-07-29 16:34 – Updated: 2026-07-29 18:04
VLAI
EPSS
VEX
Title
Improper Certificate Validation in S2OPC
Summary
Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-9758 (GCVE-0-2026-9758)
Vulnerability from cvelistv5 – Published: 2026-06-10 12:32 – Updated: 2026-06-10 13:54
VLAI
EPSS
VEX
Title
Improper Certificate Validation in S2OPC
Summary
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-6899 (GCVE-0-2026-6899)
Vulnerability from cvelistv5 – Published: 2026-06-09 08:39 – Updated: 2026-06-09 14:25
VLAI
EPSS
VEX
Title
Improper Check for Certificate Revocation in S2OPC
Summary
Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
Impacted products
Credits
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