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CVE-2026-6473

PostgreSQL server undersizes allocations, via integer wraparound

Published: May 14, 2026Updated: May 18, 2026 Sources: CVE List NVD BDUCWE-190
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.4%
Top 68.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-190

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
АЛЬТ СП 10АО «ИВК»
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise DesktopNovell Inc.
On-premOS
Operating Systems / linux-distro
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
novell inc.commercialUSOperating Systems
ао «ивк»commercialRUOperating Systemsaka ivk
and 6 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.postgresql.org/support/security/CVE-2026-6473/
postgresql.org
https://postgrespro.ru/products/postgrespro/certified
postgrespro.ru
https://www.postgresql.org/about/news/postgresql-184-1710-1614-1518-and-1423-released-3297/
postgresql.org
and 9 more references View all →

Timeline

Published
May 14, 2026
Last Updated
May 18, 2026

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