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CVE Record

CVE-2021-35522: A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2....

A Buffer Overflow in Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass devices before 2.6.2, Sigma devices before 4.9.4, and MA VP MD devices before 4.9.7 allows remote attackers to achieve code execution, denial of services, and information disclosure via TCP/IP packets.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Certain IDEMIA biometric access-control devices have a buffer overflow in command handling. A remote attacker sending TCP/IP packets could cause code execution, denial of service, or information disclosure. This is most urgent where these devices are network-reachable and used for physical access decisions.

Executive priority

Treat as high priority for any site using affected devices for building or restricted-area access. The business risk is operational disruption and possible compromise of biometric access infrastructure, but urgency depends on network exposure and firmware status.

Technical view

CVE-2021-35522 affects Thrift command handlers in IDEMIA Morpho Wave Compact and VisionPass before 2.6.2, Sigma before 4.9.4, and MA VP MD before 4.9.7. The CVE describes remote impact over TCP/IP, including code execution, service disruption, and data exposure. No CVSS, CWE, or exploit details are provided in the bundle.

Likely exposure

Exposure is limited to organizations operating the named IDEMIA biometric devices below the listed versions. Risk increases if device TCP/IP services are reachable from user networks, vendor networks, or the internet.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. It states remote attackers can trigger impact via TCP/IP packets, but provides no exploit maturity, authentication requirements, or attack complexity details.

Researcher notes

Key unknowns include vulnerable Thrift command specifics, authentication preconditions, reachable ports, and exploit reliability. The bundle only supports product/version boundaries and high-level impact. Avoid assuming internet exploitation or public exploit availability without additional evidence.

Mitigation direction

  • Inventory IDEMIA Morpho Wave Compact, VisionPass, Sigma, and MA VP MD devices.
  • Upgrade Morpho Wave Compact and VisionPass to 2.6.2 or later.
  • Upgrade Sigma devices to 4.9.4 or later.
  • Upgrade MA VP MD devices to 4.9.7 or later.
  • Restrict TCP/IP reachability to trusted administration and access-control networks.
  • Check IDEMIA advisories for model-specific upgrade and hardening guidance.

Validation and detection

  • Confirm exact model and firmware version for every deployed IDEMIA biometric device.
  • Verify no affected device remains below the fixed version threshold.
  • Review firewall rules and routes limiting TCP/IP access to device services.
  • Check monitoring for unexplained device crashes, restarts, or network anomalies.
  • Document unsupported or unpatchable devices for replacement planning.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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description · low confidence lookup

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.

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cve · low confidence lookup

CVE-2021-35522 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.