TI-2021-08590 Aliases CVE-2021-27017 GHSA-4wqj-x526-3j69

Deserialization of untrusted data in PuppetPu Puppet Agent

LOW 32CWE-502Published 2025-02-07 · Updated 2025-02-07

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: High
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-502.

Summary

Utilization of a module presented a security risk by allowing the deserialization of untrusted/user supplied data. This is resolved in the Puppet Agent 7.4.0 release.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00551 46th percentileScored 2026-11-07

Fix Partial Puppet Agent (PuppetPu): 7.4.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
PuppetPu	Puppet Agent	0.0.0 to before 7.4.0	7.4.0	Patch available	CNA

Puppet Agent VendorPuppetPu Affected 0.0.0 to before 7.4.0 Fixed in 7.4.0 Patch available CNA

Remediation

Fix · CNA Puppet Agent (PuppetPu) Fixed in 7.4.0

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Update Infrastructure 3 for Cloud Providers	Affected	No fix planned: Will not fix

Not affected: 1 product

Red Hat Satellite 6

Timeline

2026-10-02 Threatist record created from CVE-2021-27017
2026-10-03 Alias added: GHSA-4wqj-x526-3j69

References

Other 1

https://www.puppet.com/security/cve/cve-2021-27017-deserialization-untrusted-data

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences