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CVE-2023-4911: GNU C Library Buffer Overflow Vulnerability
GNU GNU C Library · in CISA KEV since 2023-11-21
2023-11-21added to KEV
2023-12-12federal remediation due date
81.42%EPSS exploit probability (30 days) 99.6th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
49days from NVD publication to KEV
What it is
GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-122 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2023-10-03 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-4911.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.