{"id":"CVE-2026-16225","state":"PUBLISHED","title":"davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write","description":"A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.","publishedAt":"2026-07-19T08:00:09.002Z","updatedAt":"2026-07-20T13:56:09.501Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["davenardella snap7"],"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:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/380047","https://vuldb.com/vuln/380047/cti","https://vuldb.com/cve/CVE-2026-16225","https://vuldb.com/submit/858228","https://github.com/davenardella/snap7/issues/17","https://github.com/davenardella/snap7/"],"weaknesses":["CWE-787","CWE-119"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16225.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16225","state":"PUBLISHED","datePublished":"2026-07-19T08:00:09.002Z","dateUpdated":"2026-07-20T13:56:09.501Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-07-18T12:29:33.863Z"},"containers":{"cna":{"title":"davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write","descriptions":[{"lang":"en","value":"A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks."}],"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:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/vuln/380047","name":"VDB-380047 | davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/380047/cti","name":"VDB-380047 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-16225","name":"CVE-2026-16225 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/858228","name":"Submit #858228 | Davide Nardella Snap7 1.4.3 Heap-Based Intra-Object Out-of-Bounds Write","tags":["third-party-advisory"]},{"url":"https://github.com/davenardella/snap7/issues/17","tags":["exploit","issue-tracking"]},{"url":"https://github.com/davenardella/snap7/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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:N/AC:L/PR:L/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:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","type":"CWE","lang":"en","description":"Out-of-bounds Write"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-07-19T08:00:09.002Z"},"timeline":[{"time":"2026-07-18T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-07-18T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-07-18T15:57:11.000Z","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"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T13:55:58.719886Z","id":"CVE-2026-16225","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":"2026-07-20T13:56:09.501Z"}}]}}}