{"api_version":"1","generated_at":"2026-07-23T21:14:52+00:00","cve":"CVE-2021-41181","urls":{"html":"https://cve.report/CVE-2021-41181","api":"https://cve.report/api/cve/CVE-2021-41181.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-41181","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-41181"},"summary":{"title":"CVE-2021-41181","description":"Nextcloud talk is a self hosting messaging service. In versions prior to 12.3.0 the Nextcloud Android Talk application did not properly detect the lockscreen state when a call was incoming. If an attacker got physical access to the locked phone, and the victim received a phone call the attacker could gain access to the chat messages and files of the user. It is recommended that the Nextcloud Android Talk App is upgraded to 12.3.0. There are no known workarounds.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2022-03-08 18:15:00","updated_at":"2022-10-24 16:42:00"},"problem_types":["CWE-287"],"metrics":[],"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-497c-c8hx-6qcf","name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-497c-c8hx-6qcf","refsource":"CONFIRM","tags":[],"title":"Talk app did allow access to sensitive chat messages on lockscreen · Advisory · nextcloud/security-advisories · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/nextcloud/talk-android/pull/1585","name":"https://github.com/nextcloud/talk-android/pull/1585","refsource":"MISC","tags":[],"title":"enable keyguard for toggle chat by mahibi · Pull Request #1585 · nextcloud/talk-android · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41181","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41181","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"41181","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nextcloud","cpe5":"talk","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"android","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-41181","STATE":"PUBLIC","TITLE":"Nextcloud Talk app exposes chat messages on lockscreen"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"security-advisories","version":{"version_data":[{"version_value":"< 12.3.0"}]}}]},"vendor_name":"nextcloud"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Nextcloud talk is a self hosting messaging service. In versions prior to 12.3.0 the Nextcloud Android Talk application did not properly detect the lockscreen state when a call was incoming. If an attacker got physical access to the locked phone, and the victim received a phone call the attacker could gain access to the chat messages and files of the user. It is recommended that the Nextcloud Android Talk App is upgraded to 12.3.0. There are no known workarounds."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"PHYSICAL","availabilityImpact":"NONE","baseScore":2.4,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"}]}]},"references":{"reference_data":[{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-497c-c8hx-6qcf","refsource":"CONFIRM","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-497c-c8hx-6qcf"},{"name":"https://github.com/nextcloud/talk-android/pull/1585","refsource":"MISC","url":"https://github.com/nextcloud/talk-android/pull/1585"}]},"source":{"advisory":"GHSA-497c-c8hx-6qcf","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2022-03-08 18:15:00","lastModifiedDate":"2022-10-24 16:42:00","problem_types":["CWE-287"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","attackVector":"PHYSICAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":2.4,"baseSeverity":"LOW"},"exploitabilityScore":0.9,"impactScore":1.4},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:N/A:N","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":2.1},"severity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:*","versionEndExcluding":"12.3.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"41181","Ordinal":"216928","Title":"CVE-2021-41181","CVE":"CVE-2021-41181","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"41181","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}