Vulnerability-Lookup

VAR-202510-2186

Vulnerability from variot - Updated: 2025-11-19 23:22

A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This impacts the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. The manipulation of the argument lang results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used. The TOTOLINK A3300R is a wireless router manufactured by TOTOLINK, a Chinese company.

Version 17.0.0cu.557_B20221024 of the TOTOLINK A3300R contains a buffer overflow vulnerability. This vulnerability stems from the fact that the parameter lang in the file /cgi-bin/cstecgi.cgi fails to properly validate the length of the input data. Attackers could exploit this vulnerability to execute arbitrary code on the system or cause a denial-of-service attack

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CVE-2025-12241 (GCVE-0-2025-12241)

Vulnerability from cvelistv5 – Published: 2025-10-27 07:02 – Updated: 2025-10-27 18:03

Title

TOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow

Summary

Severity

8.7 (High)


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

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-27 18:02 UTC

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root Scorecard

References

5 references

URL	Tags
https://vuldb.com/?id.329911	vdb-entrytechnical-description
https://vuldb.com/?ctiid.329911	signaturepermissions-required
https://vuldb.com/?submit.673723	third-party-advisory
https://github.com/noahze01/IoT-vulnerable/blob/m…	exploit
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
TOTOLINK	A3300R	Affected: 17.0.0cu.557_B20221024

Credits

yhryhryhr_tu (VulDB User)

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JSON

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          "lang": "en",
          "time": "2025-10-25T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-10-25T19:17:06.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-12241",
    "datePublished": "2025-10-27T07:02:10.780Z",
    "dateReserved": "2025-10-25T17:11:46.044Z",
    "dateUpdated": "2025-10-27T18:03:42.756Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.

Action not permitted

VAR-202510-2186

CVE-2025-12241 (GCVE-0-2025-12241)

Tags

Sightings

Nomenclature

Related by attack behaviour