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CVE Record

CVE-2026-86148: Tenda CP3 Kylin system.c SystemAsh os command injection

A security flaw has been discovered in Tenda CP3 27.5.57.101. This vulnerability affects the function SystemAsh of the file Apis/system.c of the component Kylin. The manipulation of the argument AlarmVoiceURL results in os command injection. It is possible to launch the attack remotely.

CriticalCVSS 9.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

A flaw in Tenda CP3 firmware 27.5.57.101 may let a highly privileged remote user make the camera execute operating-system commands. Successful exploitation could compromise data, device integrity, availability, and potentially connected systems. The supplied sources do not document a vendor patch or confirmed exploitation in the wild.

Executive priority

Treat confirmed CP3 27.5.57.101 deployments as urgent, especially on exposed or sensitive networks. Prioritize inventory, isolation, privileged-access review, and vendor engagement. Critical impact is plausible, although required high privileges reduce exposure compared with an unauthenticated flaw and exploitation is not confirmed.

Technical view

The Kylin SystemAsh function in Apis/system.c reportedly fails to safely handle the AlarmVoiceURL argument, creating OS command injection classified as CWE-77 and CWE-78. CVSS 4.0 scores it 9.4: network-accessible, low complexity, high privileges required, no user interaction, and high impact across vulnerable and subsequent systems.

Likely exposure

Evidence identifies only Tenda CP3 firmware 27.5.57.101. Greatest exposure exists where the affected management or API path is network-reachable and attacker-controlled accounts can obtain high privileges. The bundle does not establish whether other firmware versions, hardware revisions, default configurations, or internet-facing deployments are affected.

Exploitation context

Remote exploitation is reported, but the CVSS vector requires high privileges. The supplied bundle marks the CVE as absent from KEV and provides no evidence of active exploitation. Public technical listings exist, but this assessment does not infer exploit maturity or field activity from their existence.

Researcher notes

Key unknowns include the precise reachable interface, authentication path, affected configuration, exploit reliability, additional vulnerable versions, and vendor remediation status. Validation should remain non-destructive. The description and CVSS support command injection with high privileges, but the supplied material does not establish root execution, persistence, exploit availability, or observed compromise.

Mitigation direction

  • Inventory Tenda CP3 devices and identify those running firmware 27.5.57.101.
  • Restrict affected device management interfaces to trusted administrative networks and users.
  • Remove unnecessary internet exposure and enforce network segmentation around affected cameras.
  • Review privileged accounts and revoke credentials that are unnecessary, shared, or suspected compromised.
  • Check Tenda guidance for fixed firmware or approved mitigations; no patch is named in the supplied sources.

Validation and detection

  • Confirm each CP3 firmware version using trusted inventory or the device administration interface.
  • Verify affected management and API endpoints are unreachable from untrusted networks.
  • Audit access controls to confirm only authorized administrators hold high privileges.
  • Review device and network logs for unusual privileged requests, command execution indicators, or unexpected outbound connections.
  • After vendor remediation, verify the installed firmware version and repeat exposure checks.
Prepared
Confidence
medium
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 · medium confidence lookup

CWE-77: Command execution behavior lookup

Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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
cwe · medium confidence lookup

CWE-78: Command execution behavior lookup

Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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
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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-86148 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.4 (4.0)
Known Exploited
No
Published

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

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
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: 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
9.4CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X——VulDB
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R2.36VulDB
9.1CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R2.36VulDB
8.3CVSS 2.0HighAV:N/AC:L/Au:M/C:C/I:C/A:C/E:ND/RL:ND/RC:UR6.410VulDB

Vulnerability scoring details

Base CVSS 4.0 score

9.4Critical
CVSS 4.0 vector shape for CVE-2026-86148Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

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

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
TendaCP327.5.57.101Listed
Weakness

CWE details

CWE-77CWE-78

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