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Vulnerability record · CVE-1999-0199 · published 6 October 2020

CVE-1999-0199: Gnu glibc unchecked return value vulnerability

Gnu · Glibc

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.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.6% CWE-252 · Unchecked return value
9.8CVSS 3.1 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
25 Sep 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz ProductVendor Advisory
https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40 PatchThird Party Advisory
https://www.cee.studio/tdelete.html ExploitThird Party Advisory
https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz ProductVendor Advisory
https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40 PatchThird Party Advisory
https://www.cee.studio/tdelete.html ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-1999-0199), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.