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5.0

Halo Combat Evolved can crash when connecting to malicious server

CVE-2004-1539 · published 21 years ago
Summary

Players using Halo: Combat Evolved version 1.05 or earlier may experience a crash if they join a game server that sends an unusually long response. The malformed data causes the game to stop working, interrupting play. Update to a newer version of the game or avoid unknown servers to prevent the crash.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
gearbox_software halo_combat_evolved 1.2
1.4
1.5
1.31
cpe:2.3:a:gearbox_software:halo_combat_evolved:1.2:*:*:*:*:*:*:*
Original advisory text
Halo: Combat Evolved 1.05 and earlier allows remote game servers to cause a denial of service (client crash) via a long value in a game server reply, which triggers a NULL dereference.
Halo: Combat Evolved 1.05 and earlier allows remote game servers to cause a denial of service (client crash) via a long value in a game server reply, which triggers a NULL dereference.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
3% chance of attack within 30 days
Timeline
Published31 Dec 2004
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2004-1539 · NVD
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