{"id":"CVE-2021-28199","published":"2021-04-06T05:02:17Z","modified":"2024-09-16T16:48:36Z","title":"ASUS BMC's firmware: buffer overflow - Modify user’s information function","vendor":"ASUS","product":"BMC firmware for ASMB9-iKVM","tier":"core","eol":null,"affectedVersions":[{"vendor":"ASUS","product":"BMC firmware for ASMB9-iKVM","versions":["1.11.12"]},{"vendor":"ASUS","product":"BMC firmware for RS720A-E9-RS24-E","versions":["1.10.3"]},{"vendor":"ASUS","product":"BMC firmware for RS700A-E9-RS4","versions":["1.10.0"]},{"vendor":"ASUS","product":"BMC firmware for RS700-E9-RS4","versions":["1.09"]},{"vendor":"ASUS","product":"BMC firmware for ESC4000 G4X","versions":["1.11.6"]},{"vendor":"ASUS","product":"BMC firmware for RS700-E9-RS12","versions":["1.11.5"]},{"vendor":"ASUS","product":"BMC firmware for RS100-E10-PI2","versions":["1.13.6"]},{"vendor":"ASUS","product":"BMC firmware for RS300-E10-PS4","versions":["1.13.6"]},{"vendor":"ASUS","product":"BMC firmware for RS300-E10-RS4","versions":["1.13.6"]},{"vendor":"ASUS","product":"BMC firmware for RS500A-E9-PS4","versions":["1.14.1"]}],"description":{"text":"The specific function in ASUS BMC’s firmware Web management page (Modify user’s information function) does not verify the string length entered by users, resulting in a Buffer overflow vulnerability. As obtaining the privileged permission, remote attackers use the leakage to abnormally terminate the Web service.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":4.9,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01874,"percentile":0.79328,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-06-22","exploitedFirstSeen":"2026-06-22","ransomware":false,"evidence":[{"url":"https://view.bitsight.com/viewer/275c18689811d887dfa0368866323ed5#1","date":"2026-06-22"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"references":[{"url":"https://www.asus.com/content/ASUS-Product-Security-Advisory/","tags":["x_refsource_MISC"]},{"url":"https://www.asus.com/tw/support/callus/","tags":["x_refsource_MISC"]},{"url":"https://www.twcert.org.tw/tw/cp-132-4569-6b391-1.html","tags":["x_refsource_MISC"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-14889","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-14889","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2021-04-06","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2021-28199","provenance":"source"},{"date":"2026-06-22","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://view.bitsight.com/viewer/275c18689811d887dfa0368866323ed5#1","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":59.3,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 129 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":15.87,"detail":"percentile 0.7933"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":3.43,"detail":"base score 4.9"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}