{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15105","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-07-08T17:07:19.722Z","datePublished":"2026-07-08T22:15:12.176Z","dateUpdated":"2026-08-01T14:56:11.532Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-08-01T14:56:11.532Z"},"title":"davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-787","lang":"en","description":"Out-of-bounds Write"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"davenardella","product":"snap7","versions":[{"version":"1.4.0","status":"affected"},{"version":"1.4.1","status":"affected"},{"version":"1.4.2","status":"affected"},{"version":"1.4.3","status":"affected"}],"cpes":["cpe:2.3:a:davenardella:snap7:*:*:*:*:*:*:*:*"],"modules":["ReadVar Request Handler"]}],"descriptions":[{"lang":"en","value":"A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":6.3,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":6.3,"vectorString":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5.8,"vectorString":"AV:A/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}],"timeline":[{"time":"2026-07-08T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-07-08T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-08-01T17:00:58.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Chuan Wei","type":"finder"},{"lang":"en","value":"VULL (VulDB User)","type":"reporter"},{"lang":"en","value":"VULL (VulDB User)","type":"analyst"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"references":[{"url":"https://vuldb.com/vuln/376946","name":"VDB-376946 | davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/376946/cti","name":"VDB-376946 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-15105","name":"CVE-2026-15105 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/851026","name":"Submit #851026 | Davide Nardella Snap7 master(commit:30f37da3114024a71ba93f7fd855c680b97a406f) Stack-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/davenardella/snap7/issues/16","tags":["issue-tracking"]},{"url":"https://github.com/user-attachments/files/28681740/poc.zip","tags":["exploit"]},{"url":"https://github.com/davenardella/snap7/","tags":["product"]}],"x_generator":["VulDB PVTS v202608"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T13:18:08.587007Z","id":"CVE-2026-15105","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-09T13:21:48.368Z"}}]}}