What is CVE-1999-1166?

CVE-1999-1166 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10. CVE-1999-1166 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-1999-1166?

CVE-1999-1166 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-1999-1166?

No patch is currently available for CVE-1999-1166. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-1999-1166 actively exploited?

CVE-1999-1166 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-1999-1166

High

Linux 2.0.37 does not properly encode the Custom segment limit, which allows local users to gain root privileges by accessing and modifying kernel memory.

Package Linux Kernel

Published 1999-07-11

Last modified 2026-04-16

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

AV:L/AC:L/Au:N/C:C/I:C/A:C

References

The following references provide additional information about CVE-1999-1166 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
http://www.securityfocus.com/archive/1/18156
Patch
Kernel patch commit
http://www.securityfocus.com/bid/523
Patch

Details

CVE ID CVE-1999-1166

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 1999-07-11

Modified 2026-04-16

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-1999-1166?

CVE-1999-1166 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 . CVE-1999-1166 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-1999-1166?

CVE-1999-1166 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-1999-1166?

No patch is currently available for CVE-1999-1166. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-1999-1166 actively exploited?

No — CVE-1999-1166 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.