Security readout for executives and security teams
Plain-English summary
This vulnerability affects IDEMIA Morpho Wave Compact and VisionPass devices before version 2.6.2. An authenticated attacker with physical proximity and serial-port access could trigger a buffer overflow that may lead to code execution, service disruption, or information disclosure.
Executive priority
Prioritize remediation for devices controlling sensitive access areas or exposed to contractors, visitors, or shared maintenance environments. Lower urgency may be reasonable for devices with tightly controlled physical access and confirmed updated firmware.
Technical view
The CVE describes a buffer overflow in Thrift command handlers reachable through serial ports. The stated attacker prerequisites are physical proximity and authentication. The reported impacts are code execution, denial of service, and information disclosure on affected IDEMIA devices before 2.6.2.
Likely exposure
Exposure is most likely where affected Morpho Wave Compact or VisionPass devices are deployed and serial ports are physically reachable by authenticated users, technicians, insiders, or anyone who can obtain local access.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation is constrained by physical proximity, authentication, and serial-port access, but the impact can be serious if these devices protect sensitive facilities.
Researcher notes
Evidence is limited to the CVE description and vendor reference URLs in the bundle. No CVSS, CWE, proof-of-concept status, or detailed advisory text is provided here. Treat the version threshold and attacker prerequisites as the reliable facts.
Mitigation direction
- Upgrade affected devices to version 2.6.2 or later, following IDEMIA guidance.
- Check IDEMIA advisories for model-specific update instructions and support status.
- Restrict physical access to device serial ports and maintenance interfaces.
- Review who has authenticated maintenance access to affected devices.
- Monitor for unexpected device crashes, resets, or maintenance activity.
Validation and detection
- Inventory Morpho Wave Compact and VisionPass deployments.
- Confirm each device firmware or software version is 2.6.2 or later.
- Inspect whether serial ports are physically exposed or easily reachable.
- Review maintenance accounts and authentication controls for affected devices.
- Check IDEMIA documentation for any additional model-specific indicators.
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.
Execution 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-2021-35520 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.idemia.com/CVE reference · x_refsource_MISC
- https://biometricdevices.idemia.com/s/global-search/0696700000JJa0zAAD?sharing=trueCVE reference · x_refsource_MISC
- https://biometricdevices.idemia.com/s/global-search/0696700000JJa1nAAD?sharing=trueCVE 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.