What’s Vulnerable › Vulnerabilities

CVE-2021-21301: Video feed was captured while user has disabled video

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-11 · updated 2026-06-17
• Weakness: CWE-200

Description

Wire is an open-source collaboration platform. In Wire for iOS (iPhone and iPad) before version 3.75 there is a vulnerability where the video capture isn't stopped in a scenario where a user first has their camera enabled and then disables it. It's a privacy issue because video is streamed to the call when the user believes it is disabled. It impacts all users in video calls. This is fixed in version 3.75.

Affected products

• wireapp wire-ios: before 3.75 — fixed in 3.75

How to fix

Upgrade to a fixed version: wireapp wire-ios 3.75. Check the vendor advisory for mitigations.

References

• https://github.com/wireapp/wire-ios/commit/7e3c30120066c9b10e50cc0d20012d0849c33a40
• https://github.com/wireapp/wire-ios/pull/4879
• https://github.com/wireapp/wire-ios/security/advisories/GHSA-7fg4-x8vj-qvxf
• https://github.com/wireapp/wire-ios/commit/7e3c30120066c9b10e50cc0d20012d0849c33a40
• https://github.com/wireapp/wire-ios/pull/4879
• https://github.com/wireapp/wire-ios/security/advisories/GHSA-7fg4-x8vj-qvxf

Get alerted when CVE-2021-21301 or the next vulnerability affects your stack