What’s Vulnerable › Vulnerabilities

CVE-2021-33622

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-15 · updated 2026-06-17
• Weakness: CWE-754

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.

Affected products

• sylabs singularity: from 3.5.0 before 3.7.0 — fixed in 3.7.0
• sylabs SingularityPRO: before 3.5-8 — fixed in 3.5-8

How to fix

Upgrade to a fixed version: sylabs singularity 3.7.0; sylabs SingularityPRO 3.5-8. Check the vendor advisory for mitigations.

References

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

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