CVE-2022-41926

Call monitoring via unprotected broadcast receiver

Published Nov 25, 2022 · Updated Apr 23, 2025

Improper access control in Nextcloud Talk Android before 14.1.0 allows local users to monitor call-related broadcasts. CallActivity registers an unfiltered broadcast receiver without a private broadcast permission, allowing other apps to communicate with the receiver. Exploitation requires a malicious Android app on the same device and user interaction; exposed broadcasts reveal call activity and permit interference with call startup or media-permission requests.

CVSS severity3.3
Low
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Nextcloud Talk Android before 14.1.0 allows local users to monitor call-related broadcasts. CallActivity registers an unfiltered broadcast receiver without a private broadcast permission, allowing other apps to communicate with the receiver. Exploitation requires a malicious Android app on the same device and user interaction; exposed broadcasts reveal call activity and permit interference with call startup or media-permission requests.

The record

CVE
CVE-2022-41926
Published
Nov 25, 2022
Updated
Apr 23, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-732, CWE-200
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 14.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 14.1.0

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
3.3GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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