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

> Attackers can view video feeds from users who believe their camera is disabled, compromising privacy in Wire for iOS video calls.

- **Severity:** Low 2.6 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Feb 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-7fg4-x8vj-qvxf

## What is CVE-2021-21301?

CVE-2021-21301 is a low-severity vulnerability in wireapp wire-ios, published on 11 Feb 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-21301?

It affects 1 product.


Products: Wire Wire.

## How do I fix CVE-2021-21301?

No fix has been published for CVE-2021-21301 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-21301 being exploited?

There is no known exploitation of CVE-2021-21301 in the wild and no public exploit code.

## Other vulnerabilities in wireapp wire-ios

- [CVE-2020-27853](https://insights.sbomify.com/CVE-2020-27853/): Other in n/a (critical 9.8)
- [CVE-2021-32665](https://insights.sbomify.com/CVE-2021-32665/): Verified groups not reliable (high 8.8)
- [CVE-2020-15258](https://insights.sbomify.com/CVE-2020-15258/): Insecure use of shell.openExternal in Wire (high 8.0)
- [CVE-2018-8909](https://insights.sbomify.com/CVE-2018-8909/): Path traversal in n/a (high 7.5)
- [CVE-2021-41093](https://insights.sbomify.com/CVE-2021-41093/): Account takeover when having only access to a user's short lived token (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-21301 and fix it if it is affected.

What it is: CVE-2021-21301 is a low-severity vulnerability in wireapp wire-ios, published on 11 Feb 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-21301 in the wild and no public exploit code.

Affected product: wireapp wire-ios. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-21301/ (Markdown: https://insights.sbomify.com/CVE-2021-21301/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-21301
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21301
- OSV: https://osv.dev/vulnerability/CVE-2021-21301

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-21301/
Summaries are generated and may contain mistakes; the official description above is the record.