Vulnerability-Lookup

GHSA-55GR-958W-9J4G

Vulnerability from github – Published: 2026-08-24 18:31 – Updated: 2026-08-24 18:31

Details

Successful exploitation may enable persistent backdoors, credential theft, LAN reconnaissance, and router-assisted attacks against connected devices.

Severity

8.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-16348"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-24T18:16:59Z",
    "severity": "HIGH"
  },
  "details": "An authenticated command injection vulnerability in TP-Link Archer BE800 V1 allows an attacker with administrative access to execute arbitrary system commands with root privileges by injecting shell metacharacters via a VPN connection.\u00a0\n\n\n\n\nSuccessful exploitation may enable persistent backdoors, credential theft, LAN reconnaissance, and router-assisted attacks against connected devices.",
  "id": "GHSA-55gr-958w-9j4g",
  "modified": "2026-08-24T18:31:53Z",
  "published": "2026-08-24T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16348"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-be800/v1/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-be800/v1/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5264"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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-2026-16348 (GCVE-0-2026-16348)

Vulnerability from cvelistv5 – Published: 2026-08-24 17:25 – Updated: 2026-08-25 03:56

Title

Command Injection Vulnerability in VPN connection of Archer BE800

Summary

An authenticated command injection vulnerability in TP-Link Archer BE800 V1 allows an attacker with administrative access to execute arbitrary system commands with root privileges by injecting shell metacharacters via a VPN connection. Successful exploitation may enable persistent backdoors, credential theft, LAN reconnaissance, and router-assisted attacks against connected devices.

Severity

8.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-24 00:00 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')

Assigner

TPLink mitre root

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/us/support/faq/5264/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	Archer BE800 v1	Affected: 0 , < 1.4.2 Build 260708 (custom)

Credits

Sean Lagan, UploadSecurity

Show details on NVD website

JSON

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        "metrics": [
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            "other": {
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                "id": "CVE-2026-16348",
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                  },
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                  },
                  {
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                  }
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                "timestamp": "2026-08-24T00:00:00+00:00",
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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-55GR-958W-9J4G

CVE-2026-16348 (GCVE-0-2026-16348)

Tags

Sightings

Nomenclature