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CVE Record

CVE-2026-10122: TRENDnet TEW-432BRP formSetProtocolFilter stack-based overflow

A vulnerability has been found in TRENDnet TEW-432BRP 3.10B20. This affects the function formSetProtocolFilter of the file /goform/formSetProtocolFilter. Such manipulation of the argument protocol_name leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor explains: "This product has been EOL for 15 years (since 2009). As the item has been EOL for such a long time, we are not able to replicate or fix any vulnerabilities." This vulnerability only affects products that are no longer supported by the maintainer.

CriticalCVSS 9Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2026-10122 affects the TRENDnet TEW-432BRP router, firmware 3.10B20. A remote attacker with required access could trigger a stack-based buffer overflow. Public exploit details are disclosed, but CISA KEV is not listed. TRENDnet says the product has been end-of-life since 2009 and will not be fixed.

Executive priority

High priority if this router model exists in the environment. Because it is long unsupported and public exploit details exist, remediation should focus on removal or replacement rather than waiting for a patch.

Technical view

The flaw is in /goform/formSetProtocolFilter, specifically handling of the protocol_name argument in formSetProtocolFilter. Sources classify it as CWE-119/CWE-121 stack-based buffer overflow. CVSS 2.0 is 9.0 with network attack vector, low complexity, single authentication, and complete confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to organizations still running TRENDnet TEW-432BRP firmware 3.10B20, especially if administrative or web management access is reachable over untrusted networks. The product is unsupported, so any remaining deployment should be treated as a legacy network risk.

Exploitation context

Public exploit information exists according to VulDB and the linked GitHub reference. The provided sources do not show CISA KEV listing or confirmed in-the-wild exploitation. The CVSS vector indicates authentication is required, which may reduce opportunistic exposure but not risk on reachable devices.

Researcher notes

Do not assume broader TRENDnet impact from the available sources. The cited record names TEW-432BRP 3.10B20 only. Evidence supports public disclosure of exploit material, not confirmed active exploitation. Vendor response states the device is EOL and not reproducible or fixable by them.

Mitigation direction

  • Replace or retire TRENDnet TEW-432BRP devices; vendor states no fix will be provided.
  • Remove management access from the internet and untrusted networks.
  • Restrict access to trusted administration networks only.
  • Review vendor guidance, but plan for hardware replacement due to EOL status.
  • Monitor for unexpected requests to the affected goform endpoint.

Validation and detection

  • Inventory network devices for TRENDnet TEW-432BRP hardware.
  • Confirm whether firmware version 3.10B20 is present.
  • Identify any exposed web management interfaces.
  • Check access controls around router administration paths.
  • Review logs for unusual access to /goform/formSetProtocolFilter.
Prepared
Confidence
high
Sources
6

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-119: 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.

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cwe · low confidence lookup

CWE-121: 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 lookup
cve · low confidence lookup

CVE-2026-10122 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9 (2.0)
Known Exploited
No
Published

Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

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.

4CVSS vectors
6Timeline events
1ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: total

CVSS vector scores

4 official scores

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9CVSS 2.0CriticalAV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR810VulDB
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R2.85.9VulDB
8.8CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R2.85.9VulDB
8.7CVSS 4.0HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P——VulDB

Vulnerability scoring details

Base CVSS 4.0 score

8.7High
CVSS 4.0 vector shape for CVE-2026-10122Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineVulDB

    Advisory disclosed

  2. Source timelineVulDB

    VulDB entry created

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. Source timelineVulDB

    VulDB entry last update

  5. CVE publishedCVE Program

    The CVE record was published.

  6. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TRENDnetTEW-432BRP3.10B20Listed
Weakness

CWE details

CWE-119CWE-121

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