Security readout for executives and security teams
Plain-English summary
This flaw affects COMMAX Biometric Access Control System 1.0.0. An unauthenticated network attacker may bypass login by manipulating cookies, exposing sensitive information and potentially bypassing physical access controls in smart homes or buildings. Public exploit information exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Prioritize this for buildings or homes using affected COMMAX access systems, especially if remotely reachable. The risk is not just data exposure; it may affect physical access control. Immediate containment and vendor confirmation are appropriate.
Technical view
CVE-2021-47706 is a CWE-565 cookie-poisoning authentication bypass in COMMAX Biometric Access Control System 1.0.0. The CVSS 4.0 score is 8.7, with network access, low complexity, no privileges, and no user interaction. Reported impact is high confidentiality loss; integrity and availability impacts are not indicated in the supplied CVSS vector.
Likely exposure
Exposure is most relevant where COMMAX Biometric Access Control System 1.0.0 interfaces are reachable over a network, especially from untrusted segments or the internet. The business impact is higher because the system relates to building or smart-home physical access control.
Exploitation context
ExploitDB and Zero Science Lab references indicate public technical disclosure and exploit availability. However, CISA KEV status is false in the supplied bundle, and no cited source confirms active exploitation in the wild.
Researcher notes
The supplied record names only version 1.0.0 as affected, with default status listed as unaffected for other versions. Sources do not provide a confirmed patch level or active exploitation evidence. Public exploit references increase validation urgency but should not be treated as proof of in-the-wild attacks.
Mitigation direction
- Identify any COMMAX Biometric Access Control System 1.0.0 deployments.
- Restrict access to management interfaces to trusted networks only.
- Check COMMAX guidance for updates, replacement firmware, or supported remediation.
- Monitor access-control logs for unexpected authenticated sessions or information access.
- Treat exposed devices as high priority for network isolation.
Validation and detection
- Inventory COMMAX access-control devices and confirm product version.
- Verify whether administrative interfaces are internet-accessible or broadly reachable internally.
- Review web-session handling controls without attempting exploitation.
- Check logs for anomalous access from unknown sources.
- Document compensating controls until vendor remediation is confirmed.
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-565: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47706 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
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50206CVE reference · exploit
- Official Product HomepageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2021-5661)CVE reference · third-party-advisory
- COMMAX Biometric Access Control System 1.0.0 Product PageCVE reference · product
- VulnCheck Advisory: COMMAX Biometric Access Control System Authentication BypassCVE reference · third-party-advisory
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.
Reliance on Cookies without Validation and Integrity Checking
Reliance on Cookies without Validation and Integrity Checking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.