CVE-1999-0199

Name: CVE-1999-0199
Creator: NVD / NIST
Published: 2020-10-06T13:15:13.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.37%

Last modified Jun 16, 2026

CVE-1999-0199 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree's root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999.. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

Description

manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree's root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 3.0

/10

EPSS Probability

2.37%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-252

Affected Software

Vendor	Product	Versions
Gnu	Glibc	< 2.2

References

https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gzProduct, Vendor Advisory
https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40Patch, Third Party Advisory
https://www.cee.studio/tdelete.htmlExploit, Third Party Advisory
https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gzProduct, Vendor Advisory
https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40Patch, Third Party Advisory
https://www.cee.studio/tdelete.htmlExploit, Third Party Advisory

Timeline

Published: Oct 6, 2020
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-0199?

How severe is CVE-1999-0199?

CVE-1999-0199 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.

How do I fix CVE-1999-0199?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-1999-0199?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST