CVE-2026-6474: PostgreSQL timeofday() can disclose portions of server memory

Published May 14, 2026
·
Updated

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.

Other sources

PostgreSQL timeofday() can disclose portions of server memory

— Microsoft

Affected Software

11 affected componentsFixes available
PostgreSQL postgresql<18.4, <17.10, <16.14, <15.18, <14.23
Microsoft azl3 postgresql 16.12-1
Patch available
PostgreSQL postgresql<14.23
PostgreSQL postgresql>=15.0<15.18
PostgreSQL postgresql>=16.0<16.14
PostgreSQL postgresql>=17.0<17.10
PostgreSQL postgresql>=18.0<18.4
debian/postgresql-13<=13.16-0+deb11u1, <=13.23-0+deb11u3
debian/postgresql-15<=15.17-0+deb12u1
15.18-0+deb12u1
debian/postgresql-17<=17.9-0+deb13u1
17.10-0+deb13u1
debian/postgresql-18
18.4-1

Remediation

Patch Available

https://www.postgresql.org/support/security/CVE-2026-6474/

Event History

May 14, 2026
CVE Published
via MITRE·01:00 PM
Data Sourced
via MITRE·01:00 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·02:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
May 16, 2026
Data Sourced
via Microsoft·08:04 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:04 AM
DescriptionSeverity
May 21, 2026
Data Sourced
via Launchpad·10:49 PM
Description
May 22, 2026
Data Sourced
via Ubuntu·10:49 PM
RemedyDescriptionSeverityAffected Software
May 25, 2026
Data Sourced
via Debian·10:55 PM
DescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-6474?

CVE-2026-6474 has a medium severity level as it allows attackers to potentially retrieve sensitive portions of server memory.

2

How do I fix CVE-2026-6474?

To mitigate CVE-2026-6474, upgrade your PostgreSQL server to version 18.4 or later.

3

What versions are affected by CVE-2026-6474?

CVE-2026-6474 affects PostgreSQL versions prior to 18.4, 17.10, 16.14, 15.18, and 14.23.

4

Can CVE-2026-6474 be exploited remotely?

Yes, CVE-2026-6474 can be exploited remotely if an attacker can control the crafted timezone zones.

5

What type of attack does CVE-2026-6474 represent?

CVE-2026-6474 represents a format string vulnerability that can lead to information disclosure.

Company

Resources

Contact

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