{"cve":"CVE-2020-9502","nvd":{"published":"2020-05-13T16:15:13.277","modified":"2026-06-17T03:28:04.937","status":"Modified","description":"Some Dahua products with Build time before December 2019 have Session ID predictable vulnerabilities. During normal user access, an attacker can use the predicted Session ID to construct a data packet to attack the device.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-330"],"references":["https://www.dahuasecurity.com/support/cybersecurity/details/777","https://www.dahuasecurity.com/support/cybersecurity/details/777"],"products":["dahuasecurity:ipc-hdbw1320e-w_firmware","dahuasecurity:ipc-hx2xxx_firmware","dahuasecurity:ipc-hx5842h_firmware","dahuasecurity:ipc-hx7842h_firmware","dahuasecurity:ipc-hxxx5x4x_firmware","dahuasecurity:n42b1p_firmware","dahuasecurity:n42b2p_firmware","dahuasecurity:n42b3p_firmware","dahuasecurity:n52a4p_firmware","dahuasecurity:n52b2p_firmware","dahuasecurity:n52b3p_firmware","dahuasecurity:n52b5p_firmware","dahuasecurity:n54a4p_firmware","dahuasecurity:n54b2p_firmware","dahuasecurity:ptz1a_firmware","dahuasecurity:sd1a_firmware","dahuasecurity:sd50_firmware","dahuasecurity:sd52c_firmware","dahuasecurity:sd5a_firmware","dahuasecurity:sd6al_firmware"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2020-9502","score":0.01527,"percentile":0.74703,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}