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CVE Record

CVE-2023-37793: WAYOS FBM-291W 19.09.11V was discovered to contain a buffer overflow via the component /upgrade_filter.asp.

WAYOS FBM-291W 19.09.11V was discovered to contain a buffer overflow via the component /upgrade_filter.asp.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE reports a buffer overflow in a WAYOS FBM-291W device running firmware 19.09.11V. A buffer overflow can crash a device or, depending on details not supplied here, enable deeper compromise. The public record does not provide severity scoring, affected CPEs, authentication requirements, or a confirmed fix.

Executive priority

Prioritize discovery and exposure reduction, especially for internet-facing network equipment. Business urgency is moderate to high if these devices manage critical connectivity, but final severity cannot be quantified from the current public record.

Technical view

The CVE record identifies a buffer overflow in the /upgrade_filter.asp component of WAYOS FBM-291W 19.09.11V. The provided metadata lacks CVSS, CWE, affected CPEs, exploitability prerequisites, impact details, and fixed-version information. Treat this as an unquantified memory-corruption issue in a device web interface until vendor guidance clarifies exposure and remediation.

Likely exposure

Likely exposure is limited to organizations operating WAYOS FBM-291W devices on firmware 19.09.11V. Risk is higher if the device web interface is reachable from untrusted networks. The supplied sources do not state whether authentication is required or whether other WAYOS models or versions are affected.

Exploitation context

The CVE references a public GitHub vulnerability writeup, but the source bundle does not show CISA KEV listing, confirmed active exploitation, or broad exploitation reporting. Do not assume exploitation in the wild from the available evidence.

Researcher notes

The strongest source detail is the component and firmware version named in the CVE and referenced GitHub report. Missing items include trigger conditions, authentication state, exact impact, vulnerable parameter details suitable for defense, fixed builds, and vendor advisory status.

Mitigation direction

  • Inventory WAYOS FBM-291W devices and confirm firmware versions.
  • Check WAYOS or device supplier guidance for firmware updates or replacement advice.
  • Restrict management interface access to trusted administrative networks only.
  • Remove internet exposure for affected device administration interfaces.
  • Retire or replace unsupported devices if no vendor fix exists.

Validation and detection

  • Confirm whether any WAYOS FBM-291W runs firmware 19.09.11V.
  • Review firewall rules for management interface exposure.
  • Check whether /upgrade_filter.asp is reachable from untrusted networks.
  • Review device logs for crashes or unusual upgrade-page access.
  • Document vendor response, firmware status, and compensating controls.
Prepared
Confidence
medium
Sources
3

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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CVE-2023-37793 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
2Source 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.