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CVE Record

CVE-2026-82542: Tenda HG10 Boa Web Server formIPv6Routing buffer overflow

A weakness has been identified in Tenda HG10 300001138. Affected by this issue is the function formIPv6Routing of the file /boaform/admin/formIPv6Routing of the component Boa Web Server. This manipulation of the argument destNet causes buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

CriticalCVSS 10Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

A remotely sent request can overflow memory in the web management software of a Tenda HG10 running firmware 300001138. This may crash the device and, according to the supplied CVSS assessment, could also compromise data or configuration. Public exploit material increases urgency, although active attacks are not documented.

Executive priority

Treat confirmed, remotely reachable devices as an immediate containment and remediation priority. The combination of critical severity, unauthenticated network access, and public exploit material creates substantial risk. Leadership should require rapid inventory, exposure reduction, and vendor engagement, while recognizing that the supplied sources identify neither a vendor patch nor active exploitation.

Technical view

The destNet argument processed by formIPv6Routing at /boaform/admin/formIPv6Routing can trigger a buffer overflow. The supplied CVSS 4.0 vector rates it 10.0: network-accessible, low complexity, no privileges, and no user interaction, with high confidentiality, integrity, and availability impacts. Public material demonstrates exploitability, while the submission specifically describes denial of service.

Likely exposure

Confirmed scope is Tenda HG10 firmware 300001138. Risk is highest where the device's Boa management interface is reachable from untrusted networks. The bundle does not establish how commonly this firmware is deployed or whether management access is normally exposed.

Exploitation context

Exploit material is publicly available, and the CVSS assessment marks exploit maturity as proof-of-concept. The supplied data says this CVE is not in KEV and provides no evidence of active exploitation. Public availability should therefore be treated as elevated attack potential, not proof of attacks in the wild.

Researcher notes

Scope should remain limited to HG10 firmware 300001138 unless further vendor evidence expands it. The submission title also mentions HG7 and HG9, but the structured affected list does not. Source naming varies between formIPv6Routing/formIPv6Route and destNet/destNt. Avoid production proof-of-concept replay because the documented outcome includes denial of service.

Mitigation direction

  • Identify and prioritize all Tenda HG10 devices running firmware 300001138.
  • Check Tenda guidance for fixed firmware or an official workaround; none is named in the provided sources.
  • Until resolved, block untrusted access to the device management web interface.
  • Isolate affected devices and restrict management access to authorized administrative networks.
  • Replace or retire affected devices if no supported remediation becomes available.

Validation and detection

  • Confirm each device's model and firmware version using inventory records or its administrative interface.
  • Verify network controls prevent untrusted systems from reaching the management web interface.
  • Review available access and device logs for the affected endpoint, unexpected restarts, or service disruption.
  • Consult the cited CTI entry for published indicators; none are reproduced in the provided bundle.
  • After remediation, confirm the installed firmware version and retest management-interface access controls.
Prepared
Confidence
medium
Sources
8

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-120: 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-2026-82542 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
10 (4.0)
Known Exploited
No
Published

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

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
0ADP providers
7Source links

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
10CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P——VulDB
10CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 2.0CriticalAV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR1010VulDB

Vulnerability scoring details

Base CVSS 4.0 score

10Critical
CVSS 4.0 vector shape for CVE-2026-82542Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TendaHG10300001138Listed
Weakness

CWE details

CWE-119CWE-120

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