{"id":"CVE-2026-16225","aliases":["EUVD-2026-45435","GHSA-cc6f-5g4h-cf75"],"status":"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.","severity":{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00399,"percentile":0.34447,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-787"],"published":"2026-07-19T08:00:09Z","modified":"2026-10-24T20:10:00Z","products":[{"vendor":"davenardella","product":"snap7"}],"references":[{"url":"https://vuldb.com/vuln/380047","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/380047/cti","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-16225","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/858228","tags":["third-party-advisory"]},{"url":"https://github.com/davenardella/snap7/issues/17","tags":["exploit","issue-tracking"]},{"url":"https://github.com/davenardella/snap7/","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16225"},{"url":"https://github.com/davenardella/snap7"},{"url":"https://github.com/advisories/GHSA-cc6f-5g4h-cf75"}],"sources":{"cve":[{"id":"CVE-2026-16225","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.","status":"published","published":"2026-07-19T08:00:09.002Z","modified":"2026-07-20T13:56:09.501Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.0","score":6.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-787","CWE-119"],"updated_at":"2026-11-02T14:20:10.870108Z"}],"euvd":[{"id":"EUVD-2026-45435","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.","status":"published","published":"2026-07-19T08:00:09Z","modified":"2026-07-20T13:56:09Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium"}],"updated_at":"2026-11-02T18:19:49.035342Z"}],"ghsa":[{"id":"GHSA-cc6f-5g4h-cf75","title":"A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is...","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.","status":"published","published":"2026-07-19T09:31:36Z","modified":"2026-07-19T09:31:43Z","cvss":[{"version":"4.0","score":2.1,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:09:36.398204Z"}],"nvd":[{"id":"CVE-2026-16225","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.","status":"published","published":"2026-07-19T09:17:01.423Z","modified":"2026-10-24T20:10:00.137Z","cvss":[{"version":"4.0","score":2.1,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T14:12:30.631352Z"}]}}