Vulnerability-Lookup

GHSA-R6P4-CRM5-RWVH

Vulnerability from github – Published: 2026-08-07 21:30 – Updated: 2026-08-07 21:30

Details

By sending crafted systool instructions through the asynchronous request path, successful exploitation may cause the httpd process or device management service to crash and may result in temporary loss of access to the web management interface or device reboot.

Severity

6.8 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-9030"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T21:17:30Z",
    "severity": "MODERATE"
  },
  "details": "A denial-of-service\nvulnerability exists in httpd service on Archer A6 v4 where the asynchronous systool\ninstruction handlng path in httpd does not properly synchronize or safely manage\nconcurrent systool operations.\u00a0 \n\n\n\n\n\nBy sending\ncrafted systool instructions through the asynchronous request path, successful\nexploitation may cause the httpd process or device management service to crash\nand may result in temporary loss of access to the web management interface or\ndevice reboot.",
  "id": "GHSA-r6p4-crm5-rwvh",
  "modified": "2026-08-07T21:30:40Z",
  "published": "2026-08-07T21:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9030"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-a6/v4/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/faq/5234"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-a6/v4/#Firmware"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/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-2026-9030 (GCVE-0-2026-9030)

Vulnerability from cvelistv5 – Published: 2026-08-07 20:38 – Updated: 2026-08-10 18:23

Title

Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6

Summary

A denial-of-service vulnerability exists in httpd service on Archer A6 v4 where the asynchronous systool instruction handlng path in httpd does not properly synchronize or safely manage concurrent systool operations. By sending crafted systool instructions through the asynchronous request path, successful exploitation may cause the httpd process or device management service to crash and may result in temporary loss of access to the web management interface or device reboot.

Severity

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-10 17:28 UTC

CWE

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization

Assigner

TPLink

References

3 references

URL	Tags
https://www.tp-link.com/us/support/download/arche…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/en/support/faq/5234/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	Archer A6 v4	Affected: 0 , < V4_1.15.10 Build 260625 Rel.25447 (custom)

Credits

Dariusz Gońda

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-9030",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-10T17:28:38.437749Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-10T18:23:58.299Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "modules": [
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          ],
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          "versions": [
            {
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            }
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Dariusz Go\u0144da"
        }
      ],
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
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        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
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      },
      "references": [
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          "tags": [
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        },
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          "url": "https://www.tp-link.com/en/support/faq/5234/"
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      ],
      "source": {
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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.

Action not permitted

GHSA-R6P4-CRM5-RWVH

CVE-2026-9030 (GCVE-0-2026-9030)

Tags

Sightings

Nomenclature