{"cve":"CVE-2023-20555","nvd":{"published":"2023-08-08T18:15:11.173","modified":"2026-06-17T05:30:17.830","status":"Modified","description":"Insufficient input validation in\nCpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting\nan arbitrary bit in an attacker-controlled pointer potentially leading to\narbitrary code execution in SMM.","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"],"references":["https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4003","https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4003"],"products":["amd:athlon_3015ce_firmware","amd:athlon_3015e_firmware","amd:athlon_gold_3150c_firmware","amd:athlon_gold_3150g_firmware","amd:athlon_gold_3150ge_firmware","amd:athlon_gold_3150u_firmware","amd:athlon_gold_pro_3150g_firmware","amd:athlon_gold_pro_3150ge_firmware","amd:athlon_pro_300ge_firmware","amd:athlon_pro_3045b_firmware","amd:athlon_pro_3145b_firmware","amd:athlon_silver_3050c_firmware","amd:athlon_silver_3050e_firmware","amd:athlon_silver_3050u_firmware","amd:ryzen_3_3300_firmware","amd:ryzen_3_3300u_firmware","amd:ryzen_3_3300x_firmware","amd:ryzen_3_3350u_firmware","amd:ryzen_3_4100_firmware","amd:ryzen_3_4300u_firmware","amd:ryzen_3_5100_firmware","amd:ryzen_3_5125c_firmware","amd:ryzen_3_5300g_firmware","amd:ryzen_3_5300ge_firmware","amd:ryzen_3_5300u_firmware","amd:ryzen_3_5400u_firmware","amd:ryzen_3_5425u_firmware","amd:ryzen_3_7320u_firmware","amd:ryzen_3_pro_7330u_firmware","amd:ryzen_4700s_firmware","amd:ryzen_5_3450u_firmware","amd:ryzen_5_3500c_firmware","amd:ryzen_5_3500u_firmware","amd:ryzen_5_3550h_firmware","amd:ryzen_5_3580u_firmware","amd:ryzen_5_3600_firmware","amd:ryzen_5_3600x_firmware","amd:ryzen_5_4500_firmware","amd:ryzen_5_4500u_firmware","amd:ryzen_5_4600h_firmware","amd:ryzen_5_4600hs_firmware","amd:ryzen_5_4600u_firmware","amd:ryzen_5_4680u_firmware","amd:ryzen_5_5500_firmware","amd:ryzen_5_5500u_firmware","amd:ryzen_5_5560u_firmware","amd:ryzen_5_5600_firmware","amd:ryzen_5_5600g_firmware","amd:ryzen_5_5600ge_firmware","amd:ryzen_5_5600h_firmware"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-20555","score":0.00324,"percentile":0.25506,"date":"2026-10-31"},"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."]}