CVE-2021-21301

Name: CVE-2021-21301
Creator: NVD / NIST
Published: 2021-02-11T18:15:16.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2021-21301 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Wire	Wire	< 3.75

References

https://github.com/wireapp/wire-ios/commit/7e3c30120066c9b10e50cc0d20012d0849c33a40Patch, Third Party Advisory
https://github.com/wireapp/wire-ios/pull/4879Patch, Third Party Advisory
https://github.com/wireapp/wire-ios/security/advisories/GHSA-7fg4-x8vj-qvxfPatch, Third Party Advisory
https://github.com/wireapp/wire-ios/commit/7e3c30120066c9b10e50cc0d20012d0849c33a40Patch, Third Party Advisory
https://github.com/wireapp/wire-ios/pull/4879Patch, Third Party Advisory
https://github.com/wireapp/wire-ios/security/advisories/GHSA-7fg4-x8vj-qvxfPatch, Third Party Advisory

Timeline

Published: Feb 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21301?

How severe is CVE-2021-21301?

CVE-2021-21301 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21301?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21301?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST