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CVE-1999-0199

32
FAUCET Score

CVE-1999-0199 describes a documentation flaw in the GNU C Library (glibc) prior to version 2.2, specifically concerning the 'tdelete' function. The missing documentation about the return value when deleting a tree's root could lead to applications accessing dangling pointers. This vulnerability is rated as Critical (CVSS 9.8) due to its potential for complete compromise of confidentiality, integrity, and availability, with a low attack complexity and no user interaction required. Despite its age and high severity, there is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. However, the vulnerability has garnered significant community discussion, indicating ongoing interest.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0240 is in the 72nd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-1999-0199

glibc: manual/search.texi lacks a statement about the unspecified tdelete return value upon deletion of a tree's root

Nov 9, 1999

References

ftp.gnu.org / gnu/glibc/glibc-2.2.tar.gz
ProductVendor Advisory
github.com / bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be
PatchThird Party Advisory
cee.studio / tdelete.html
ExploitThird Party Advisory