CVE-2021-28199

ASUS BMC's firmware: buffer overflow - Modify user’s information function

4.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.87%Up 0.8 points since Apr 14, 2021

What each source reports

CVE List Score used 4.9

ASUS BMC's firmware: buffer overflow - Modify user’s information function

Record: CVE-2021-28199
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2021-14889 4.9

Record: EUVD-2021-14889
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2g54-42rw-p43x No score

The specific function in ASUS BMC’s firmware Web management page (Modify user’s information...

Record: GHSA-2g54-42rw-p43x
Weakness: CWE-120
Updated: 2026-11-02

NVD 4.9

Record: CVE-2021-28199
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness: CWE-120
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-28199 is a medium vulnerability (CVSS 4.9) in Asus Asmb9-ikvm Firmware, published April 6, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.87%, the 79th percentile. No source names a fixed version.