CVE-2017-11721
Buffer overflow in ioquake3 before 2017-08-02 allows remote attackers to cause a denial of...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2017-11721- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2017-11721- Updated
- 2026-11-02
EUVDEUVD-2017-3331 No score
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.
- Record
EUVD-2017-3331- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-22r2-8jr8-3hmr
Buffer overflow in ioquake3 before 2017-08-02 allows remote attackers to cause a denial of...
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.
- Record
GHSA-22r2-8jr8-3hmr- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2017-11721- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-11721
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.
- Record
DEBIAN-CVE-2017-11721- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-11721
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.
- Record
UBUNTU-CVE-2017-11721- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2018-0148 No score
Updated ioquake3 packages fix security vulnerability
It was discovered that ioquake3 contained a read buffer overflow that allows remote attackers to cause a denial of service (CVE-2017-11721).
- Record
MGASA-2018-0148- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ioquake3Debian:12 |
before 1.36+u20170803+dfsg1-1 | 1.36+u20170803+dfsg1-1 |
ioquake3Debian:13 |
before 1.36+u20170803+dfsg1-1 | 1.36+u20170803+dfsg1-1 |
ioquake3Debian:14 |
before 1.36+u20170803+dfsg1-1 | 1.36+u20170803+dfsg1-1 |
iortcwDebian:12 |
before 1.51+dfsg1-3, plus listed versions 1.42b+20150930+dfsg1-11.42b+20151119+dfsg1-11.42d+dfsg1-11.42d+dfsg1-21.42d+dfsg1-3 Show 7 moreShow less1.42d+dfsg1-41.42d+dfsg1-51.50a+dfsg1-11.50a+dfsg1-21.50a+dfsg1-31.51+dfsg1-11.51+dfsg1-2 |
1.51+dfsg1-3 |
iortcwDebian:13 |
before 1.51+dfsg1-3, plus listed versions 1.42b+20150930+dfsg1-11.42b+20151119+dfsg1-11.42d+dfsg1-11.42d+dfsg1-21.42d+dfsg1-3 Show 7 moreShow less1.42d+dfsg1-41.42d+dfsg1-51.50a+dfsg1-11.50a+dfsg1-21.50a+dfsg1-31.51+dfsg1-11.51+dfsg1-2 |
1.51+dfsg1-3 |
iortcwDebian:14 |
before 1.51+dfsg1-3, plus listed versions 1.42b+20150930+dfsg1-11.42b+20151119+dfsg1-11.42d+dfsg1-11.42d+dfsg1-21.42d+dfsg1-3 Show 7 moreShow less1.42d+dfsg1-41.42d+dfsg1-51.50a+dfsg1-11.50a+dfsg1-21.50a+dfsg1-31.51+dfsg1-11.51+dfsg1-2 |
1.51+dfsg1-3 |
iortcwDebian:9 |
before 1.50a+dfsg1-3+deb9u1, plus listed versions 1.42b+20150930+dfsg1-11.42b+20151119+dfsg1-11.42d+dfsg1-11.42d+dfsg1-21.42d+dfsg1-3 Show 5 moreShow less1.42d+dfsg1-41.42d+dfsg1-51.50a+dfsg1-11.50a+dfsg1-21.50a+dfsg1-3 |
1.50a+dfsg1-3+deb9u1 |
ioquake3Debian:8 |
before 1.36+u20140802+gca9eebb-2+deb8u2, plus listed versions 1.36+u20140802+gca9eebb-21.36+u20140802+gca9eebb-2+deb8u1 |
1.36+u20140802+gca9eebb-2+deb8u2 |
ioquake3Debian:9 |
before 1.36+u20161101+dfsg1-2+deb9u1, plus listed versions 1.36+u20161101+dfsg1-2 |
1.36+u20161101+dfsg1-2+deb9u1 |
ioquake3Mageia:6 |
before 1.36-12.20170428.1.1.mga6 | 1.36-12.20170428.1.1.mga6 |
ioquake3Ubuntu:16.04:LTS |
All versions, plus listed versions 1.36+u20150710+dfsg1-11.36+u20150926+dfsg1-11.36+u20151017+dfsg1-11.36+u20160122+dfsg1-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-11721 is a critical vulnerability (CVSS 9.8) in Ioquake3, published August 3, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.52%, the 84th percentile. Fixed in ioquake3 1.36+u20170803+dfsg1-1.