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9.8

ioquake3 can crash when receiving malicious network packet

CVE-2017-11721 · published 9 years ago
Summary

The open‑source game engine ioquake3 may stop working if it receives a specially crafted network packet. This could cause the application to shut down unexpectedly, disrupting gameplay or services that rely on it. Update to the version released after August 2 2017 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
ioquake3 ioquake3 <= 2017-07-31
cpe:2.3:a:ioquake3:ioquake3:*:*:*:*:*:*:*:*
Original advisory text
Buffer overflow in ioquake3 before 2017-08-02 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted packet.
Buffer overflow in ioquake3 before 2017-08-02 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted packet.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker full control (estimated)
Severity
9.8 Critical
Exploitation
3% chance of attack within 30 days
Type
CWE-119Buffer Overflow
Timeline
Published3 Aug 2017
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2017-11721 · NVD
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