Security readout for executives and security teams
Plain-English summary
A flaw in ASUS BMC firmware lets a logged-in privileged remote user crash the BMC web management service by submitting overly long Web Service configuration input. The business impact is availability loss for server out-of-band management, not data theft or system takeover based on the provided evidence.
Executive priority
Treat this as a medium-priority infrastructure management risk. It is not described as data compromise, but BMC availability matters during incidents and maintenance. Prioritize inventory, management-plane access control, and vendor firmware guidance.
Technical view
CVE-2021-28182 is a CWE-120 buffer overflow in the Web Service configuration function of specific ASUS BMC firmware. The vulnerable page does not verify user-entered string length. CVSS 3.1 is 4.9, with network access, low attack complexity, high privileges required, no user interaction, and high 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 by many administrators or from broad management networks.
Exploitation context
The source bundle does not show CISA KEV listing or public active exploitation evidence. The described attacker already needs privileged permission, which limits opportunistic abuse. If abused, the cited impact is abnormal termination of the Web service, affecting management availability.
Researcher notes
The evidence supports an authenticated, privileged, remote availability issue in a BMC web configuration path. The bundle does not provide fixed versions, exploit details, or proof of exploitation. Avoid assuming broader ASUS BMC impact beyond the listed products and versions.
Mitigation direction
- Check ASUS and TWCERT guidance for fixed firmware or vendor-recommended remediation.
- Inventory ASUS BMC firmware versions on affected server platforms.
- Restrict BMC web management access to trusted administrative networks.
- Review and reduce privileged BMC accounts to required personnel only.
- Monitor BMC web service availability and unexpected restarts.
Validation and detection
- Confirm whether affected ASUS platforms are present in asset inventory.
- Record installed BMC firmware versions for Z10PR-D16, ASMB8-iKVM, and Z10PE-D16 WS.
- Verify BMC web interfaces are not exposed outside intended management networks.
- Check logs for unexpected BMC web service termination or restart events.
- Track vendor advisory pages for fixed-version or workaround updates.
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-120: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2021-28182 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
- Medium
- CVSS
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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:N/I:N/A:H1.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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-132-4552-5b2c4-1.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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.