CVE-2003-1143: Croteam Serioussam

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

Croteam Serious Sam demo test 2 2.1a, Serious Sam: the First Encounter 1.05, and Serious Sam: the Second Encounter 1.05 allow remote attackers to cause a denial of service (crash or freeze) via a TCP packet with an invalid first parameter.

Affected products

• Croteam Serioussam: version test_2_2.1_a only; version the_first_encounter_1.0.5 only; version the_second_encounter_1.0.5 only; version the_second_encounter_demo only

Published 2003-10-30. Last modified 2026-06-16.