CVE-2026-82555 (GCVE-0-2026-82555)

Vulnerability from cvelistv5 – Published: 2026-08-30 17:30 – Updated: 2026-08-30 17:30
VLAI
Title
TOTOLINK N600R Authentication cstecgi.cgi loginAuth random values
Summary
A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such manipulation leads to insufficiently random values. It is possible to launch the attack remotely. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
3.7 (Low)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CWE
  • CWE-330 - Insufficiently Random Values
  • CWE-310 - Cryptographic Issues
Assigner
References
Impacted products
Vendor Product Version CPE status
TOTOLINK N600R Affected: 4.3.0cu.7866_B20220506
    cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
bluerry (VulDB User)
Show details on NVD website
To clipboard 

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  "containers": {
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
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          ],
          "product": "N600R",
          "vendor": "TOTOLINK",
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              "version": "4.3.0cu.7866_B20220506"
            }
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          "lang": "en",
          "type": "reporter",
          "value": "bluerry (VulDB User)"
        }
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          "lang": "en",
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        }
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          "tags": [
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          "url": "https://vuldb.com/cve/CVE-2026-82555"
        },
        {
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        },
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          "url": "https://github.com/b1uerry/cves/tree/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token"
        },
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          "url": "https://github.com/b1uerry/cves/blob/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token/poc.py"
        },
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          "value": "VulDB entry created"
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          "lang": "en",
          "time": "2026-08-29T21:00:03.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TOTOLINK N600R Authentication cstecgi.cgi loginAuth random values",
      "x_generator": [
        "VulDB PVTS v202608"
      ]
    }
  },
  "cveMetadata": {
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    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-82555",
    "datePublished": "2026-08-30T17:30:10.581Z",
    "dateReserved": "2026-08-29T18:54:51.440Z",
    "dateUpdated": "2026-08-30T17:30:10.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}



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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.


Detection rules are retrieved from Rulezet.