CVE-2023-39957

moderate-risk

Published 2023-08-10

Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version 17.0.0, an unprotected intend allowed malicious third party apps to trick the Talk Android app into writing files outside of its intended cache directory. Nextcloud Talk Android version 17.0.0 has a patch for this issue. No known workarounds are available.

Do I need to act?

0.41% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (4)

Talk

Affected Vendors

Nextcloud

References (6)

Patch https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36f7-9...

Patch https://github.com/nextcloud/talk-android/pull/3064

Issue Tracking https://hackerone.com/reports/1997029

Patch https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36f7-9...

Patch https://github.com/nextcloud/talk-android/pull/3064

Issue Tracking https://hackerone.com/reports/1997029

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 2/34 · Minimal

Exposure 10/34 · Low