CVE•Published 2020-10-06•Modified 2026-09-25•1 article on news•6 live references•NVD data
CVE-1999-0199Gnu · Glibc
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
83
Exploit Prediction Scoring System · top 17% of all CVEs
Weaknesses (CWE)
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.
Timeline
Published 2020-10-06
Modified 2026-09-25
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-1999-0199Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Gnu Glibc"All exposed Gnu Glibc instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Glibc"HTTP body or banner mentions "Glibc" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-1999-0199Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-1999-0199Censys host search filtered to this CVE id.
grep.app
CVE-1999-0199Public source-code mentions — fast PoC discovery.
GitHub code
CVE-1999-0199GitHub code search for direct mentions.
Google dork
"CVE-1999-0199" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-1999-0199 on GitHub.