CVE-2007-0556

What it is

The query planner in PostgreSQL before 8.0.11, 8.1 before 8.1.7, and 8.2 before 8.2.2 does not verify that a table is compatible with a "previously made query plan," which allows remote authenticated users to cause a denial of service (server crash) and possibly access database content via an "ALTER COLUMN TYPE" SQL statement, which can be leveraged to read arbitrary memory from the server.

At a glance

Exploitability

Can be exploited over the network with a login. High risk of data exposure, service disruption.

Exploit odds

3.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2007-02-06 01:28 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:35 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.1% in the next 30 days (EPSS).
• Severity: 6.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2007-02-06 01:28 UTC

Last modified

2026-06-16 22:35 UTC

Exploit probability

3.1% · EPSS, next 30 days

Record status

Modified

Affected

• PostgreSQL 1.0
• PostgreSQL 1.01
• PostgreSQL 1.02
• PostgreSQL 1.09
• PostgreSQL 6.0
• PostgreSQL 6.1
• PostgreSQL 6.1.1
• PostgreSQL 6.2

Attack profile CVSS 2.0 · 6.6

Attack vector

Network

Complexity

High

Authentication

Single

Confidentiality

Complete

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2007-0556.md and follow it. Check whether this project is affected by CVE-2007-0556. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

Copy as ticket · More options · Status badge