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CVE-2007-0556

MEDIUM severity · CVSS 6.6
6.6CVSS MEDIUM

Summary

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.

Impact & exploitability

Attack vectorNetwork
Attack complexityHigh
Privileges required
User interaction
Confidentiality impact
Integrity impactNone
Availability impact
Exploit probability (EPSS)2%

AV:N/AC:H/Au:S/C:C/I:N/A:C

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Last checked: Wed, 10 Jun 2026 22:18:30 UTC