CVE•Published 2024-01-31•Modified 2026-05-12•1 article on news•6 live references•NVD data
CVE-2023-6246Gnu · Glibc
Vulnerability data via NVD (ingested)
CVSS v3.1
8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
96
Exploit Prediction Scoring System · top 4% of all CVEs
Weaknesses (CWE)
Description
A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0]) is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue affects glibc 2.36 and newer.
Timeline
Published 2024-01-31
Modified 2026-05-12
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-2023-6246Hosts 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-2023-6246Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-6246Censys host search filtered to this CVE id.
grep.app
CVE-2023-6246Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-6246GitHub code search for direct mentions.
Google dork
"CVE-2023-6246" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (6)
CVE-2023-62466 repos