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Back to active CVEs
High ยท CVSS 8.7CVE-2026-76784

Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home DevicesCVE-2026-76784

Answer in brief

CVE-2026-76784 records a High severity (CVSS 8.7) vulnerability in Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./EP10 (generic), TP-Link Systems Inc./EP25 V2 (generic), TP-Link Systems Inc./EP40A (generic), TP-Link Systems Inc./EP40M (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Aug 28, 2026Source checked Oct 11, 2026First seen by HOL Aug 26, 2026Material review Aug 28, 2026
Upstream Advisory

Key facts

Risk
High ยท CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
20 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link Systems Inc./EP10 (generic), TP-Link Systems Inc./EP25 V2 (generic), TP-Link Systems Inc./EP40A (generic), TP-Link Systems Inc./EP40M (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TP-Link Systems Inc./EP10generic>=0 <1.1.1 Build 250908 Rel.1125081.1.1 Build 250908 Rel.112508, 1.1.1
TP-Link Systems Inc./EP25 V2generic>=0 <1.0.3 Build 240529 Rel.1452521.0.3 Build 240529 Rel.145252, 1.0.3
TP-Link Systems Inc./EP40Ageneric>=0 <1.1.1 Build 250908 Rel.1125261.1.1 Build 250908 Rel.112526, 1.1.1
TP-Link Systems Inc./EP40Mgeneric>=0 <1.1.0 Build 240415 Rel.1712191.1.0 Build 240415 Rel.171219, 1.1.0
TP-Link Systems Inc./ES20Mgeneric>=0 <1.1.6 Build 250522 Rel.2102541.1.6 Build 250522 Rel.210254, 1.1.6
TP-Link Systems Inc./HS103P3 / HS103P4 v5generic>=0 <1.1.3 Build 250908 Rel.1125081.1.3 Build 250908 Rel.112508, 1.1.3
TP-Link Systems Inc./HS200 V5.26generic>=0 <1.0.3 Build 240723 Rel.1926221.0.3 Build 240723 Rel.192622, 1.0.3
TP-Link Systems Inc./HS220-LA(US) 4.6 / HS220-BL(US) 4.6generic>=0 <1.1.1 Build 240802 Rel.0941421.1.1 Build 240802 Rel.094142, 1.1.1
TP-Link Systems Inc./HS220-LA(US) 6.6 / HS220-BL(US) 6.6generic>=0 <1.0.3 Build 240723 Rel.1926301.0.3 Build 240723 Rel.192630, 1.0.3
TP-Link Systems Inc./HS220 V3.26generic>=0 <1.1.1 Build 240802 Rel.0941311.1.1 Build 240802 Rel.094131, 1.1.1
TP-Link Systems Inc./HS300 V2generic>=0 <1.1.2 Build 241220 Rel.1713331.1.2 Build 241220 Rel.171333, 1.1.2
TP-Link Systems Inc./KL125generic>=0 <1.1.1 Build 260710 Rel.0826461.1.1 Build 260710 Rel.082646, 1.1.1
TP-Link Systems Inc./KP115generic>=0 <1.1.1 Build 250908 Rel.1129451.1.1 Build 250908 Rel.112945, 1.1.1
TP-Link Systems Inc./KP125MP2 / KP125MP4generic>=0 <1.2.5 Build 241213 Rel.1725041.2.5 Build 241213 Rel.172504, 1.2.5
TP-Link Systems Inc./KP200 V3generic>=0 <1.1.0 Build 250225 Rel.1717241.1.0 Build 250225 Rel.171724, 1.1.0
TP-Link Systems Inc./KP303 V2generic>=0 <1.1.2 Build 241220 Rel.1733211.1.2 Build 241220 Rel.173321, 1.1.2
TP-Link Systems Inc./KS205generic>=0 <1.1.1 Build 240724 Rel.1059201.1.1 Build 240724 Rel.105920, 1.1.1
TP-Link Systems Inc./KS220Mgeneric>=0 <1.1.6 Build 250522 Rel.2102541.1.6 Build 250522 Rel.210254, 1.1.6
TP-Link Systems Inc./KS225generic>=0 <1.1.1 Build 240626 Rel.1751251.1.1 Build 240626 Rel.175125, 1.1.1
TP-Link Systems Inc./KS240generic>=0 <1.0.6 Build 240122 Rel.1601001.0.6 Build 240122 Rel.160100, 1.0.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./EP10, TP-Link Systems Inc./EP25 V2, TP-Link Systems Inc./EP40A.
  2. 2Review the reported fix. Update TP-Link Systems Inc./EP10 to 1.1.1 Build 250908 Rel.112508; TP-Link Systems Inc./EP25 V2 to 1.0.3 Build 240529 Rel.145252; TP-Link Systems Inc./EP40A to 1.1.1 Build 250908 Rel.112526; TP-Link Systems Inc./EP40M to 1.1.0 Build 240415 Rel.171219; TP-Link Systems Inc./ES20M to 1.1.6 Build 250522 Rel.210254; TP-Link Systems Inc./HS103P3 / HS103P4 v5 to 1.1.3 Build 250908 Rel.112508; TP-Link Systems Inc./HS200 V5.26 to 1.0.3 Build 240723 Rel.192622; TP-Link Systems Inc./HS220-LA(US) 4.6 / HS220-BL(US) 4.6 to 1.1.1 Build 240802 Rel.094142; TP-Link Systems Inc./HS220-LA(US) 6.6 / HS220-BL(US) 6.6 to 1.0.3 Build 240723 Rel.192630; TP-Link Systems Inc./HS220 V3.26 to 1.1.1 Build 240802 Rel.094131; TP-Link Systems Inc./HS300 V2 to 1.1.2 Build 241220 Rel.171333; TP-Link Systems Inc./KL125 to 1.1.1 Build 260710 Rel.082646; TP-Link Systems Inc./KP115 to 1.1.1 Build 250908 Rel.112945; TP-Link Systems Inc./KP125MP2 / KP125MP4 to 1.2.5 Build 241213 Rel.172504; TP-Link Systems Inc./KP200 V3 to 1.1.0 Build 250225 Rel.171724; TP-Link Systems Inc./KP303 V2 to 1.1.2 Build 241220 Rel.173321; TP-Link Systems Inc./KS205 to 1.1.1 Build 240724 Rel.105920; TP-Link Systems Inc./KS220M to 1.1.6 Build 250522 Rel.210254; TP-Link Systems Inc./KS225 to 1.1.1 Build 240626 Rel.175125; TP-Link Systems Inc./KS240 to 1.0.6 Build 240122 Rel.160100 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 26, 2026

Sources and claim methodology

  • Source referencetp-link.com
  • Source referencetp-link.com
  • Source referencetp-link.com
  • Source referencetp-link.com
Upstream source description

Multiple TP-Link Kasa smart home devices contain insufficient cryptographic protections in the local device communication protocol. An adjacent network attacker may intercept, replay or forge locally exchanged control messages, potentially resulting in unauthorized device control. Successful exploitation could allow an attacker to manipulate the operational state of an affected device, resulting in unauthorized state changes, disruption of normal device functionality or a denial-of-service condition.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-325
Source
CVE List V5
Source checked
Oct 11, 2026
References
4 linked sources
Open source record