Vulnerability-Lookup

GHSA-Q3G3-7Q7P-5JWV

Vulnerability from github – Published: 2026-07-15 03:32 – Updated: 2026-08-06 18:30

Details

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

5.3 (Medium)


                  
                    CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

8.6 (High)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-9770"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-15T01:17:10Z",
    "severity": "HIGH"
  },
  "details": "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",
  "id": "GHSA-q3g3-7q7p-5jwv",
  "modified": "2026-08-06T18:30:29Z",
  "published": "2026-07-15T03:32:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9770"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notes"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notes"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5192"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-9770 (GCVE-0-2026-9770)

Vulnerability from cvelistv5 – Published: 2026-07-15 00:21 – Updated: 2026-07-15 12:38

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

8.6 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-15 12:37 UTC

CWE

CWE-321 - Use of hard-coded cryptographic key

Assigner

TPLink mitre root Scorecard

References

5 references

URL	Tags
https://www.tp-link.com/en/support/download/ec71/…	patch
https://www.tp-link.com/us/support/download/ec71/…	patch
https://www.tp-link.com/us/support/download/ec70/…	patch
https://www.tp-link.com/en/support/download/ec70/…	patch
https://www.tp-link.com/us/support/faq/5192/	vendor-advisory

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

Christopher Childress

Show details on NVD website

JSON

To clipboard

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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-15T12:37:44.275721Z",
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-Q3G3-7Q7P-5JWV

CVE-2026-9770 (GCVE-0-2026-9770)

Tags

Sightings

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