CVE-2006-6638: IBM DB2 Universal Database

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

IBM DB2 8.1 before FixPak 14 allows remote attackers to cause a denial of service via a crafted SQLJRA packet, which causes a NULL pointer dereference in the sqle_db2ra_as_recvrequest function in DB2ENGN.DLL, a different issue than CVE-2006-4257.

Affected products

• IBM DB2 Universal Database: version 8.1 only; version 8.1.4 only; version 8.1.5 only; version 8.1.6 only; version 8.1.6c only; version 8.1.7 only; …

Published 2006-12-19. Last modified 2026-06-16.