{"cve":"CVE-2023-4911","nvd":{"published":"2023-10-03T18:15:10.463","modified":"2026-10-14T22:17:18.373","status":"Analyzed","description":"A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787","CWE-122"],"references":["https://access.redhat.com/errata/RHSA-2023:5453","https://access.redhat.com/errata/RHSA-2023:5454","https://access.redhat.com/errata/RHSA-2023:5455","https://access.redhat.com/errata/RHSA-2023:5476","https://access.redhat.com/errata/RHSA-2024:0033"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","gnu:glibc","netapp:bootstrap_os","netapp:h300s_firmware","netapp:h410c_firmware","netapp:h410s_firmware","netapp:h500s_firmware","netapp:h700s_firmware","netapp:ontap_select_deploy_administration_utility","redhat:codeready_linux_builder","redhat:codeready_linux_builder_eus","redhat:codeready_linux_builder_for_arm64","redhat:codeready_linux_builder_for_arm64_eus","redhat:codeready_linux_builder_for_ibm_z_systems","redhat:codeready_linux_builder_for_ibm_z_systems_eus","redhat:codeready_linux_builder_for_power_little_endian","redhat:codeready_linux_builder_for_power_little_endian_eus","redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_for_arm_64","redhat:enterprise_linux_for_arm_64_eus","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_ibm_z_systems_eus_s390x","redhat:enterprise_linux_for_power_big_endian_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_update_services_for_sap_solutions","redhat:virtualization","redhat:virtualization_host","siemens:simatic_s7-1500_cpu_1518-4_pn\\/dp_mfp_firmware","siemens:simatic_s7-1500_cpu_1518f-4_pn\\/dp_mfp_firmware","siemens:simatic_s7-1500_tm_mfp_firmware","siemens:siplus_s7-1500_cpu_1518-4_pn\\/dp_mfp_firmware"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-4911","score":0.63769,"percentile":0.99215,"date":"2026-10-25"},"kev":{"cve":"CVE-2023-4911","date_added":"2023-11-21","due_date":"2023-12-12","vendor":"GNU","product":"GNU C Library","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}