Low
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-41181
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:56 UTC · Revision 1
Source evidence
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.
osv:CVE-2021-41181
Complete source record
{
"id": "018987f988d7549be4fba3e2eca8ef959bfe0d48bfb858c21fb41b331f448145",
"url": "https://osv.dev/vulnerability/CVE-2021-41181",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-41181",
"summary": "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.",
"evidence": "osv:CVE-2021-41181",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2021-41181",
"aliases": [
"CVE-2021-41181",
"GHSA-497c-c8hx-6qcf"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nextcloud/talk-android",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f2a76060b911765d4fd168a95aa8b1175e6985e2"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "12.3.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v12.2.0",
"customer-v12.2.0",
"alpha-120020007",
"alpha-120020006",
"alpha-120020005",
"alpha-120020004",
"alpha-120020003",
"alpha-120020002",
"alpha-120000016",
"alpha-120000015",
"alpha-120000014",
"alpha-120000013",
"alpha-",
"alpha-120000008",
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"v7.0.0beta3",
"v7.0.0beta2",
"v7.0.0beta1",
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"v6.0.7beta",
"v6.0.6internal",
"v6.0.6-internal",
"v6.0.2",
"v6.0.1",
"v6.0.0",
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"v6.0.0beta3",
"v6.0.0beta2",
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"v3.1.0",
"v3.1.0beta6",
"v3.1.0beta5",
"v3.1.0beta4",
"v3.1.0beta3",
"v3.1.0beta2",
"v3.1.0beta1",
"v3.0.1",
"v3.0.0",
"v3.0.0beta10",
"v3.0.0beta8",
"v3.0.0beta7",
"v3.0.0beta6",
"v3.0.0beta5",
"v3.0.0beta4",
"v3.0.0beta3",
"v3.0.0beta1",
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"v1.1.0beta3",
"v1.1.0beta2",
"v1.1.0beta1",
"v1.0.14",
"v1.0.13",
"v1.0.12",
"v1.0.11",
"v1.0.10",
"v1.0.9",
"v1.0.8",
"v1.0.7",
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"v1.0.5",
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"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0",
"v0.2.0",
"v0.1.2",
"v0.1.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41181.json"
}
}
],
"modified": "2026-10-24T10:50:42.821613663Z",
"provider": "osv",
"references": [
"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-497c-c8hx-6qcf",
"https://github.com/nextcloud/talk-android/pull/1585"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:*"
],
"vendor_product": "nextcloud:talk",
"extracted_events": [
{
"range": [
{
"fixed": "12.3.0"
}
],
"source": "CPE_RANGE"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-41181",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442514,
"published_at": "2022-03-08T18:15:07.807+00:00"
}