Security readout for executives and security teams
Plain-English summary
This vulnerability affects specific ASUS BMC firmware used for server management. An attacker who already has administrator access to the BMC web interface could abuse a user-modification function to run arbitrary commands. The main business risk is loss of control over server management infrastructure.
Executive priority
Treat this as a high-priority server management risk where affected ASUS BMC firmware is deployed. It is not presented as internet-scale unauthenticated exploitation, but compromised BMC administrator access can have severe operational impact.
Technical view
CVE-2021-28204 is a CWE-78 command injection issue in the Modify user information function of ASUS BMC firmware. The source states a specific parameter is not filtered. The CVSS 3.1 score is 7.2, with network access, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to environments running the listed ASUS BMC firmware versions: Z10PR-D16 1.14.51, ASMB8-iKVM 1.14.51, or Z10PE-D16 WS 1.14.2. Risk is higher where BMC web management is reachable beyond tightly controlled administrative networks.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires administrator permission on the BMC web management interface. That makes it most relevant after credential compromise, insider misuse, or weak administrative access controls.
Researcher notes
Evidence is concise and does not describe a patch version, exploit availability, or detailed affected parameter. Validation should focus on product/version matching, BMC management-plane exposure, and vendor advisory follow-up. Avoid assuming broader ASUS firmware impact beyond the listed products.
Mitigation direction
- Check ASUS and TWCERT advisories for corrected firmware or vendor workarounds.
- Restrict BMC web management access to dedicated administrative networks only.
- Review and reduce BMC administrator accounts to required personnel.
- Rotate BMC administrator credentials if exposure or misuse is suspected.
- Monitor BMC logs for unexpected user-management changes.
Validation and detection
- Inventory ASUS BMC devices and record firmware versions.
- Confirm whether any device matches the affected product and version list.
- Verify BMC web interfaces are not reachable from untrusted networks.
- Review administrator account lists for unknown or unnecessary users.
- Check vendor advisories for current remediation status.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-28204 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.asus.com/content/ASUS-Product-Security-Advisory/CVE reference · x_refsource_MISC
- https://www.asus.com/tw/support/callus/CVE reference · x_refsource_MISC
- https://www.twcert.org.tw/tw/cp-132-4574-b61a6-1.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.