CVE-2021-28186 json
ASUS BMC's firmware: buffer overflow - ActiveX configuration-2 acquisition
published 2021-04-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14876
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
The specific function in ASUS BMC’s firmware Web management page (ActiveX configuration-2 acquisition) 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.
Exploit prediction
1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- ASUS BMC firmware for Z10PR-D16
- ASUS BMC firmware for ASMB8-iKVM
- ASUS BMC firmware for Z10PE-D16 WS
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
asus.com
/content/ASUS-Product-Security-Advisory/
vendor-advisory
-
asus.com
/tw/support/callus/
vendor-advisory
-
twcert.org.tw
/tw/cp-132-4556-ece3d-1.html
third-party-advisory
Sources
- CVE List CVE-2021-28186
- NVD CVE-2021-28186
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