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CVE Record

CVE-2022-44366: Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setDiagnoseInfo.

Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setDiagnoseInfo.

CriticalCVSS 9.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

This CVE describes a critical buffer overflow in a diagnostic function on Tenda i21 firmware V1.0.0.14(4656). If reachable, the flaw is rated as unauthenticated and network-accessible, so exposed devices could face full confidentiality, integrity, and availability impact.

Executive priority

Prioritize this urgently if Tenda i21 devices are present, especially at the perimeter. The business risk is high because the published score indicates unauthenticated network attack potential with full system impact, while the supplied sources do not name a confirmed fix.

Technical view

CVE-2022-44366 is reported as CWE-787 out-of-bounds write in /goform/setDiagnoseInfo on Tenda i21 V1.0.0.14(4656). The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, producing a 9.8 critical score.

Likely exposure

Exposure is likely limited to organizations running the identified Tenda i21 firmware, especially if administrative or web management surfaces are reachable from untrusted networks. The supplied CVE data does not provide complete CPEs or broader affected-version ranges.

Exploitation context

The source bundle marks KEV as false and provides no cited evidence of active exploitation. A public GitHub researcher reference exists, which increases validation and reproduction risk, but this analysis cannot claim exploitation in the wild.

Researcher notes

Evidence is thin but consistent: CVE text, CVSS vector, CWE-787, and a public GitHub reference identify the affected endpoint and firmware. The CVE affected-product metadata is incomplete, so validate against actual device model, firmware, and vendor documentation.

Mitigation direction

  • Inventory Tenda i21 devices and firmware versions immediately.
  • Remove affected devices from direct internet exposure.
  • Restrict management access to trusted admin networks or VPN.
  • Check Tenda guidance for fixed firmware or replacement options.
  • Segment affected devices away from sensitive internal systems.
  • Monitor for crashes, resets, or suspicious diagnostic requests.

Validation and detection

  • Confirm whether any Tenda i21 runs V1.0.0.14(4656).
  • Review external exposure for Tenda management interfaces.
  • Verify /goform/setDiagnoseInfo is not reachable from untrusted networks.
  • Check vendor release notes for a corrected firmware version.
  • Review logs for unusual access to diagnostic functions.
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

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-787: 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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cve · low confidence lookup

CVE-2022-44366 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

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
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2022-44366Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-787

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