BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2025
CVE-2025-14300High confidence

Unauthenticated Access to connectAP API Endpoint on Tapo C100, C200 & C425

TP-Link Systems Inc. · Tapo C200

8.7HighCVSS 4.0
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.37% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs TP-Link Systems Inc. Tapo C200 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-204619

No EUVD known-exploited evidence

The HTTPS service on Tapo C200 v3, v5, C425 v1.2 and C100 v5  exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.7 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

The HTTPS service on Tapo C200 v3, v5, C425 v1.2 and C100 v5  exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

What

The HTTPS service on Tapo C200 v3, v5, C425 v1.2 and C100 v5  exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

The HTTPS service on Tapo C200 v3, v5, C425 v1.2 and C100 v5  exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

Why

A security-sensitive function is reachable without the authentication check that should protect it.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
an adjacent network → Missing Authentication for Critical Function → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Adjacent
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-306 ↗

CWE-306: Missing Authentication for Critical Function. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVAdjacentAttack vector: The attacker must be on an adjacent or logically close network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCHighVulnerable-system confidentiality: A successful attack can cause a major loss.VIHighVulnerable-system integrity: A successful attack can cause a major loss.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
UnauthenticatedCWE-306
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2025-204619Official EUVD mapping

The HTTPS service on Tapo C200 v3, v5, C425 v1.2 and C100 v5  exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

Official EUVD record ↗
Cyber Security Agency of Singapore · English · CSA-SB-20251224Security Bulletin 24 Dec 2025

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 24 Dec 2025, published on 24 December 2025. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-024335TP-LINK Technologiesのtapo c200 ファームウェアにおける重要な機能に対する認証の欠如に関する脆弱性

Tapo C200 V3 の HTTPS サービスは、適切な認証が行われないまま connectAP インターフェースを公開しています。同じローカルネットワークセグメント上にいる認証されていない攻撃者が、この脆弱性を悪用することでデバイスの Wi-Fi 設定を変更し、接続障害やサービス拒否（DoS）を引き起こすおそれがあります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-024336TP-LINK Technologiesのtapo c200 ファームウェアにおける複数の脆弱性

Tapo C200 V3 の HTTPS サーバーは、Content-Length ヘッダーの検証を適切に行っていないため、整数オーバーフローが発生する可能性があります。同じローカルネットワークセグメント上の認証されていない攻撃者が細工した HTTPS リクエストを送信すると、過剰なメモリが割り当てられ、デバイスがクラッシュしてサービス拒否（DoS）が発生する可能性があります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-024328TP-LINK Technologiesのtapo c200 ファームウェアにおける複数の脆弱性

Tapo C200 V3のONVIF XMLパーサーにはバッファオーバーフローの脆弱性が存在します。同一ローカルネットワークセグメント上にいる認証されていない攻撃者が、特別に細工されたSOAP XMLリクエストを送信すると、メモリオーバーフローとデバイスのクラッシュが発生し、サービス拒否（DoS）となる可能性があります。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 20 Dec 2025 · Last source change 30 Sept 2026, 20:54 UTC · CWE-306 · Missing Authentication for Critical Function

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-204619
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < V3_1.4.5 Build 251104; < V5_1.4.6 Build 260709 Rel.27675n; < V5_1.4.4 Build 260303; < V1.20_1.2.27 Build 260518 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Tapo C200: < V3_1.4.5 Build 251104, < V5_1.4.6 Build 260709 Rel.27675n; Tapo C100 v5: < V5_1.4.4 Build 260303; Tapo C425 v1.2: < V1.20_1.2.27 Build 260518 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: removed patch: tp-link.com/v1.20; removed patch: tp-link.com/v5; 1 further removals.
    Before
    patch: tp-link.com/v1.20 · patch: tp-link.com/v5 · remediation: tp-link.com/v1.20 · 1 more references
    After
    vendor advisory: tp-link.com/4849
    tp-link.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    < V3_1.4.5 Build 251104; < V5_1.4.6 Build 260709 Rel.27675n; < V5_1.4.4 Build 260303; < V1.20_1.2.27 Build 260518 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    < V3_1.4.5 Build 251104; < V5_1.4.6 Build 260709 Rel.27675n; < V5_1.4.4 Build 260303; < V1.20_1.2.27 Build 260518 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  4. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    tp-link.com ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: added patch: tp-link.com/v1.20; added patch: tp-link.com/v5; 1 further additions.
    Before
    vendor advisory: tp-link.com/4849
    After
    patch: tp-link.com/v1.20 · patch: tp-link.com/v5 · remediation: tp-link.com/v1.20 · 1 more references
    tp-link.com ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    < V3_1.4.5 Build 251104; < V5_1.4.4 Build 260303 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < V3_1.4.5 Build 251104; < V5_1.4.6 Build 260709 Rel.27675n; < V5_1.4.4 Build 260303; < V1.20_1.2.27 Build 260518 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  7. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    tp-link.com ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2025-204619↗Vendor advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2025-14300 · cve.blacktree.nl