Is CVE-2026-6474 in the CISA KEV catalog?

No. CVE-2026-6474 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-6474?

CVE-2026-6474 has a CVSS v3 base score of 4.3 (Moderate).

What is the EPSS score for CVE-2026-6474?

CVE-2026-6474 has an EPSS score of 0.21% (11th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6474?

Upgrade postgresql-13 on debian 11 to 13.23-0+deb11u4 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2026-6474

MEDIUM

4.3

CVSS v3

NVD

Description

Externally-controlled format string in PostgreSQL timeofday() function allows an attacker to retrieve portions of server memory, via crafted timezone zones. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

CWE-134

How to fix

Remediation Available

postgresql-13Debian

Fixed in:13.23-0+deb11u4CVE-2026-6474

postgresql18Rocky

Fixed in:main@srcRHSA-2026:22878

Fixed in:main@aarch64RHSA-2026:22878

Fixed in:main@noarchRHSA-2026:22878

Fixed in:main@x86_64RHSA-2026:22878

postgresql18Red Hat / RHEL

Fixed in:main@aarch64RHSA-2026:22878

Fixed in:main@x86_64RHSA-2026:22878

Fixed in:main@noarchRHSA-2026:22878

Fixed in:main@srcRHSA-2026:22878

postgresql-14Ubuntu

Fixed in:14.23-0ubuntu0.22.04.1USN-8294-1

postgresql-16Ubuntu

Fixed in:16.14-0ubuntu0.24.04.1USN-8294-1

postgresql-17Ubuntu

Fixed in:17.10-0ubuntu0.25.10.1USN-8294-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.21%probability of exploitation in 30 days

11thpercentile

Low risk: more likely to be exploited than 11% of all known CVEs.

References

Patch1

postgresql.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-18.