How severe is CVE-2021-41558?

CVE-2021-41558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41558?

CVE-2021-41558 affects Set User Project Set User. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41558?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-41558 published?

CVE-2021-41558 was published on 2021-09-27 and last updated on 2026-06-17.

CVE-2021-41558

CVE-2021-41558 is a critical-severity vulnerability in Set User Project Set User with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Set User Project Set User
Published: 2021-09-27
Last modified: 2026-06-17

Description

The set_user extension module before 3.0.0 for PostgreSQL allows ProcessUtility_hook bypass via set_config.

Frequently asked questions

What is CVE-2021-41558?: The set_user extension module before 3.0.0 for PostgreSQL allows ProcessUtility_hook bypass via set_config.
How severe is CVE-2021-41558?: CVE-2021-41558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41558?: CVE-2021-41558 affects Set User Project Set User. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-41558 published?: CVE-2021-41558 was published on 2021-09-27 and last updated on 2026-06-17.

References

https://github.com/pgaudit/set_user/releases/tag/REL3_0_0

Affected products (1)

cpe:2.3:a:set_user_project:set_user:*:*:*:*:*:postgresql:*:*

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