{"cve":"CVE-2021-27504","nvd":{"published":"2023-11-21T18:15:07.713","modified":"2026-06-17T03:44:59.673","status":"Modified","description":"Texas Instruments devices running FREERTOS, malloc returns a valid \npointer to a small buffer on extremely large values, which can trigger \nan integer overflow vulnerability in 'malloc' for FreeRTOS, resulting in\n code execution.","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-190"],"references":["https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04","https://www.ti.com/tool/TI-RTOS-MCU","https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04","https://www.ti.com/tool/TI-RTOS-MCU"],"products":["amazon:freertos","ti:simplelink_cc13xx_software_development_kit","ti:simplelink_cc26xx_software_development_kit","ti:simplelink_cc32xx_software_development_kit","ti:simplelink_msp432e401y","ti:simplelink_msp432e411y"],"source":"nvd","synced_at":"2026-10-19T21:42:07.670898610+00:00"},"epss":{"cve":"CVE-2021-27504","score":0.00279,"percentile":0.20461,"date":"2026-11-01"},"kev":null,"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."]}