{"cve":"CVE-2021-34711","nvd":{"published":"2021-10-06T20:15:09.587","modified":"2026-06-17T03:56:24.243","status":"Modified","description":"A vulnerability in the debug shell of Cisco IP Phone software could allow an authenticated, local attacker to read any file on the device file system. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by providing crafted input to a debug shell command. A successful exploit could allow the attacker to read any file on the device file system.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.5},"cwes":["CWE-22","CWE-36"],"references":["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-arbfileread-NPdtE2Ow","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-arbfileread-NPdtE2Ow"],"products":["cisco:ip_conference_phone_7832_firmware","cisco:ip_conference_phone_8832_firmware","cisco:ip_phone_7811_firmware","cisco:ip_phone_7821_firmware","cisco:ip_phone_7832_firmware","cisco:ip_phone_7841_firmware","cisco:ip_phone_7861_firmware","cisco:ip_phone_8811_firmware","cisco:ip_phone_8831_firmware","cisco:ip_phone_8841_firmware","cisco:ip_phone_8845_firmware","cisco:ip_phone_8851_firmware","cisco:ip_phone_8861_firmware","cisco:ip_phone_8865_firmware","cisco:ip_phones_8832_firmware","cisco:wireless_ip_phone_8821_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-34711","score":0.00266,"percentile":0.18577,"date":"2026-11-01"},"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."]}