{"id":"CVE-2025-31703","aliases":["EUVD-2025-208815","GHSA-26qr-26wf-xv6x"],"status":"published","title":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical...","description":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.","severity":{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00296,"percentile":0.22518,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-305"],"published":"2026-03-18T07:13:21Z","modified":"2026-06-17T09:10:48Z","products":[{"vendor":"dahua","product":"nvr2-4ks3"},{"vendor":"dahua","product":"xvr1b16h-i/t"},{"vendor":"dahua","product":"xvr4232an-i/t"}],"references":[{"url":"https://www.dahuasecurity.com/about-dahua/trust-center/dahua-psirt/security-advisory-%E2%80%93-vulnerability-found-in-dahua-nvr-xvr-device"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31703"},{"url":"https://github.com/advisories/GHSA-26qr-26wf-xv6x"}],"sources":{"cve":[{"id":"CVE-2025-31703","description":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.","status":"published","published":"2026-03-18T07:13:21.911Z","modified":"2026-03-18T14:09:28.123Z","cvss":[{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T14:32:44.763463Z"}],"euvd":[{"id":"EUVD-2025-208815","description":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.","status":"published","published":"2026-03-18T07:13:21Z","modified":"2026-03-18T14:09:28Z","cvss":[{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"low"}],"updated_at":"2026-11-02T19:25:33.306068Z"}],"ghsa":[{"id":"GHSA-26qr-26wf-xv6x","title":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical...","description":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.","status":"published","published":"2026-03-18T09:30:28Z","modified":"2026-03-18T09:30:28Z","cvss":[{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T15:06:41.700997Z"}],"nvd":[{"id":"CVE-2025-31703","description":"A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.","status":"published","published":"2026-03-18T08:16:26.81Z","modified":"2026-06-17T09:10:48.66Z","cvss":[{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T14:12:01.641503Z"}]}}