CVE-2026-9770 (GCVE-0-2026-9770)
Vulnerability from cvelistv5 – Published: 2026-07-15 00:21 – Updated: 2026-07-15 00:21
VLAI
EPSS
VEX
Title
Hardcoded Cryptographic Key Information Disclosure Vulnerability on TP-Link Kasa EC70 and EC71
Summary
Kasa EC71 v4 and EC70 v4 firmware contains a static cryptographic private key stored in a read-only filesystem
that is shared across devices. An
attacker with access to the firmware image can extract the embedded key.
Successful
exploitation may allow an unauthenticated attacker on the same network to use
this key in the web management service, compromising the confidentiality of
encrypted communications. This may enable passive decryption of traffic or
active man-in-the-middle (MITM) attacks
Severity
CWE
- CWE-321 - Use of hard-coded cryptographic key
Assigner
References
5 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | Kasa EC71 v4 |
Affected:
0 , < 2.4.0 Build 20260520 rel.4191
(custom)
|
|
| TP-Link Systems Inc. | Kasa EC70 v4 |
Affected:
0 , < 2.4.0 Build 20260520 rel.4191
(custom)
|
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Kasa EC71 v4",
"vendor": "TP-Link Systems Inc.",
"versions": [
{
"lessThan": "2.4.0 Build 20260520 rel.4191",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Kasa EC70 v4",
"vendor": "TP-Link Systems Inc.",
"versions": [
{
"lessThan": "2.4.0 Build 20260520 rel.4191",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Christopher Childress"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eKasa EC71 v4 and EC70 v4 firmware contains a static cryptographic private key stored in a read-only filesystem\nthat is shared across devices.\u0026nbsp; An\nattacker with access to the firmware image can extract the embedded key.\u0026nbsp; \u003c/p\u003e\u003cp\u003e\n\n\u003c/p\u003e\u003cp\u003eSuccessful\nexploitation may allow an unauthenticated attacker on the same network to use\nthis key in the web management service, compromising the confidentiality of\nencrypted communications. This may enable passive decryption of traffic or\nactive man-in-the-middle (MITM) attacks\u003c/p\u003e"
}
],
"value": "Kasa EC71 v4 and EC70 v4 firmware contains a static cryptographic private key stored in a read-only filesystem\nthat is shared across devices.\u00a0 An\nattacker with access to the firmware image can extract the embedded key.\u00a0 \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation may allow an unauthenticated attacker on the same network to use\nthis key in the web management service, compromising the confidentiality of\nencrypted communications. This may enable passive decryption of traffic or\nactive man-in-the-middle (MITM) attacks"
}
],
"impacts": [
{
"capecId": "CAPEC-474",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-474 Signature Spoofing by Key Theft"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-321",
"description": "CWE-321 Use of hard-coded cryptographic key",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-15T00:21:06.126Z",
"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
"shortName": "TPLink"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notes"
},
{
"tags": [
"patch"
],
"url": "https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes"
},
{
"tags": [
"patch"
],
"url": "https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes"
},
{
"tags": [
"patch"
],
"url": "https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notes"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://www.tp-link.com/us/support/faq/5192/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Hardcoded Cryptographic Key Information Disclosure Vulnerability on TP-Link Kasa EC70 and EC71",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
"assignerShortName": "TPLink",
"cveId": "CVE-2026-9770",
"datePublished": "2026-07-15T00:21:06.126Z",
"dateReserved": "2026-05-27T22:00:46.491Z",
"dateUpdated": "2026-07-15T00:21:06.126Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-9770\",\"sourceIdentifier\":\"f23511db-6c3e-4e32-a477-6aa17d310630\",\"published\":\"2026-07-15T01:17:10.387\",\"lastModified\":\"2026-07-15T01:17:10.387\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Kasa EC71 v4 and EC70 v4 firmware contains a static cryptographic private key stored in a read-only filesystem\\nthat is shared across devices.\u00a0 An\\nattacker with access to the firmware image can extract the embedded key.\u00a0 \\n\\n\\n\\n\\n\\n\\n\\n\\n\\nSuccessful\\nexploitation may allow an unauthenticated attacker on the same network to use\\nthis key in the web management service, compromising the confidentiality of\\nencrypted communications. This may enable passive decryption of traffic or\\nactive man-in-the-middle (MITM) attacks\"}],\"affected\":[{\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\",\"affectedData\":[{\"vendor\":\"TP-Link Systems Inc.\",\"product\":\"Kasa EC71 v4\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"2.4.0 Build 20260520 rel.4191\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"TP-Link Systems Inc.\",\"product\":\"Kasa EC70 v4\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"2.4.0 Build 20260520 rel.4191\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-321\"}]}],\"references\":[{\"url\":\"https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notes\",\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\"},{\"url\":\"https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notes\",\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\"},{\"url\":\"https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes\",\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\"},{\"url\":\"https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes\",\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\"},{\"url\":\"https://www.tp-link.com/us/support/faq/5192/\",\"source\":\"f23511db-6c3e-4e32-a477-6aa17d310630\"}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…