Vulnerability-Lookup

FKIE_CVE-2026-5363

Vulnerability from fkie_nvd - Published: 2026-04-16 00:16 - Updated: 2026-06-17 10:58

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation. The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login. An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration. This issue affects Archer C7: through Build 20220715.

References

	URL	Tags
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/us/support/faq/3562/	Not Applicable

Impacted products

Vendor	Product	Version
tp-link	archer_c7_firmware	*
tp-link	archer_c7	5.0
tp-link	archer_c7	5.80

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "uhttpd"
          ],
          "product": "Archer C7 v5 and v5.8",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
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              "status": "affected",
              "version": "0",
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            }
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      "source": "f23511db-6c3e-4e32-a477-6aa17d310630"
    }
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  "configurations": [
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    }
  ],
  "id": "CVE-2026-5363",
  "lastModified": "2026-06-17T10:58:54.270",
  "metrics": {
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
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          "valueDensity": "NOT_DEFINED",
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  "published": "2026-04-16T00:16:29.547",
  "references": [
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      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "tags": [
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  "vulnStatus": "Analyzed",
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}

CVE-2026-5363 (GCVE-0-2026-5363)

Vulnerability from cvelistv5 – Published: 2026-04-15 23:45 – Updated: 2026-04-16 23:10 Unsupported When Assigned

Title

Use of weak cryptographic key in TP-Link Archer C7

Summary

Severity

5.4 (Medium)


                        
                          CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-16 13:17 UTC

CWE

CWE-326 - Inadequate Encryption Strength

Assigner

TPLink mitre root

References

1 reference

URL	Tags
https://www.tp-link.com/us/support/faq/3562/

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	Archer C7 v5 and v5.8	Affected: 0 , ≤ Build 20220715 (custom)

Credits

Sérgio Silva (CYBERS3C)

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-5363",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-16T13:17:25.657073Z",
                "version": "2.0.3"
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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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.