# CVE-2022-20763: Cisco Webex Meetings Java Deserialization Vulnerability

> Authenticated attackers can inject arbitrary Java code via malicious login requests in Cisco Webex Meetings, leading to code execution.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Apr 2022
- **Updated:** 6 Nov 2024
- **Also known as:** GHSA-6w4v-wcgf-49jv

## What is CVE-2022-20763?

CVE-2022-20763 is a medium-severity unsafe deserialization vulnerability in Cisco Webex Meetings Online, published on 6 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the login authorization components of Cisco Webex Meetings could allow an authenticated, remote attacker to inject arbitrary Java code. This vulnerability is due to improper deserialization of Java code within login requests. An attacker could exploit this vulnerability by sending malicious login requests to the Cisco Webex Meetings service. A successful exploit could allow the attacker to inject arbitrary Java code and take arbitrary actions within the Cisco Webex Meetings application.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2022-20763?

It affects 1 product.


Products: Cisco Webex Meetings Online.

## How do I fix CVE-2022-20763?

No fix has been published for CVE-2022-20763 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-20763 being exploited?

There is no known exploitation of CVE-2022-20763 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Webex Meetings Online

- [CVE-2018-0287](https://insights.sbomify.com/CVE-2018-0287/): Code injection in Cisco WebEx Advanced Recording Format Player (high 8.8)
- [CVE-2019-1637](https://insights.sbomify.com/CVE-2019-1637/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1638](https://insights.sbomify.com/CVE-2019-1638/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1639](https://insights.sbomify.com/CVE-2019-1639/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1640](https://insights.sbomify.com/CVE-2019-1640/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-20763 and fix it if it is affected.

What it is: CVE-2022-20763 is a medium-severity unsafe deserialization vulnerability in Cisco Webex Meetings Online, published on 6 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-20763 in the wild and no public exploit code.

Affected product: Cisco Webex Meetings Online. 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-2022-20763/ (Markdown: https://insights.sbomify.com/CVE-2022-20763/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-20763
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-20763
- OSV: https://osv.dev/vulnerability/CVE-2022-20763

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-20763/
Summaries are generated and may contain mistakes; the official description above is the record.