{"id":"CVE-2026-18790","state":"PUBLISHED","title":"Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds","description":"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.","publishedAt":"2026-08-04T17:30:09.393Z","updatedAt":"2026-08-04T19:51:41.975Z","severity":{"score":4.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Systerel S2OPC"],"affected":[{"vendor":"Systerel","product":"S2OPC","versions":[{"version":"1.7.0","status":"affected"},{"version":"1.7.1","status":"affected"},{"version":"1.7.2","status":"affected"},{"version":"1.7.3","status":"affected"}],"cpes":["cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*"],"modules":["DeleteMonitoredItemsRequest Handler"]}],"references":["https://vuldb.com/vuln/385790","https://vuldb.com/vuln/385790/cti","https://vuldb.com/cve/CVE-2026-18790","https://vuldb.com/submit/857761","https://github.com/gff-cw/information/issues/13","https://github.com/user-attachments/files/28907371/poc.zip"],"weaknesses":["CWE-125","CWE-119"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18790.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18790","state":"PUBLISHED","datePublished":"2026-08-04T17:30:09.393Z","dateUpdated":"2026-08-04T19:51:41.975Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-08-04T08:41:39.377Z"},"containers":{"cna":{"title":"Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Systerel","product":"S2OPC","versions":[{"version":"1.7.0","status":"affected"},{"version":"1.7.1","status":"affected"},{"version":"1.7.2","status":"affected"},{"version":"1.7.3","status":"affected"}],"cpes":["cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*"],"modules":["DeleteMonitoredItemsRequest Handler"]}],"references":[{"url":"https://vuldb.com/vuln/385790","name":"VDB-385790 | Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/385790/cti","name":"VDB-385790 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-18790","name":"CVE-2026-18790 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/857761","name":"Submit #857761 | Systerel S2OPC 1.7.3 Out-of-bounds Read","tags":["third-party-advisory"]},{"url":"https://github.com/gff-cw/information/issues/13","tags":["issue-tracking"]},{"url":"https://github.com/user-attachments/files/28907371/poc.zip","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","type":"CWE","lang":"en","description":"Out-of-Bounds Read"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-08-04T17:30:09.393Z"},"timeline":[{"time":"2026-08-04T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-08-04T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-08-04T10:46:44.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"VULL (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202608"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-04T19:15:26.094434Z","id":"CVE-2026-18790","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-04T19:51:41.975Z"}}]}}}