Vulnerability-Lookup

CVE-2026-1816 (GCVE-0-2026-1816)

Vulnerability from cvelistv5 – Published: 2026-05-21 14:08 – Updated: 2026-05-21 14:32

Title

OTP Bypass in TEİAŞ's Mobile Application

Summary

Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application allows Brute Force. This issue affects Mobile Application: from 1.6.2 before 1.13.

Severity

6.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-21 14:32 UTC

CWE

CWE-307 - Improper restriction of excessive authentication attempts

Assigner

TR-CERT

References

1 reference

URL	Tags
https://siberguvenlik.gov.tr/guvenlik-bildirimler…	government-resource

Impacted products

1 product

Vendor	Product	Version
Turkiye Electricity Transmission Corporation (TEİAŞ)	Mobile Application	Affected: 1.6.2 , < 1.13 (custom)

Date Public

2026-05-21 13:59

Credits

Metin ÖGTEM

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-1816

Vulnerability from fkie_nvd - Published: 2026-05-21 15:16 - Updated: 2026-06-17 10:16

Severity

6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Summary

References

	URL	Tags
	iletisim@usom.gov.tr	https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Mobile Application",
          "vendor": "Turkiye Electricity Transmission Corporation (TE\u0130A\u015e)",
          "versions": [
            {
              "lessThan": "1.13",
              "status": "affected",
              "version": "1.6.2",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "iletisim@usom.gov.tr"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TE\u0130A\u015e) Mobile Application allows Brute Force.\n\nThis issue affects Mobile Application: from 1.6.2 before 1.13."
    }
  ],
  "id": "CVE-2026-1816",
  "lastModified": "2026-06-17T10:16:33.890",
  "metrics": {
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          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "LOW",
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          "userInteraction": "REQUIRED",
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          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 4.2,
        "source": "iletisim@usom.gov.tr",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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            },
            {
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            },
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            }
          ],
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          "timestamp": "2026-05-21T14:32:32.195470Z",
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    }
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GHSA-RHJF-QFGH-PMW6

Vulnerability from github – Published: 2026-05-21 15:34 – Updated: 2026-05-21 15:34

Details

Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application allows Brute Force.

This issue affects Mobile Application: from 1.6.2 before 1.13.

Severity

6.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-1816"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-307"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-21T15:16:22Z",
    "severity": "MODERATE"
  },
  "details": "Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TE\u0130A\u015e) Mobile Application allows Brute Force.\n\nThis issue affects Mobile Application: from 1.6.2 before 1.13.",
  "id": "GHSA-rhjf-qfgh-pmw6",
  "modified": "2026-05-21T15:34:09Z",
  "published": "2026-05-21T15:34:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1816"
    },
    {
      "type": "WEB",
      "url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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

CVE-2026-1816 (GCVE-0-2026-1816)

FKIE_CVE-2026-1816

GHSA-RHJF-QFGH-PMW6

Tags

Sightings

Nomenclature