CVE-2026-1816 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286

History

Thu, 21 May 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 21 May 2026 14:45:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		OTP Bypass in TEİAŞ's Mobile Application
Weaknesses		CWE-307
References		https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286
Metrics		cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N'}`

MITRE

Status: PUBLISHED

Assigner: TR-CERT

Published: 2026-05-21T14:08:15.591Z

Updated: 2026-05-21T14:32:45.765Z

Reserved: 2026-02-03T14:06:50.593Z

Link: CVE-2026-1816

Vulnrichment

Updated: 2026-05-21T14:32:42.400Z

NVD

Status : Deferred

Published: 2026-05-21T15:16:22.557

Modified: 2026-05-21T15:24:41.890

Link: CVE-2026-1816

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-05-21T15:30:13Z

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-1816", "assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "state": "PUBLISHED", "assignerShortName": "TR-CERT", "dateReserved": "2026-02-03T14:06:50.593Z", "datePublished": "2026-05-21T14:08:15.591Z", "dateUpdated": "2026-05-21T14:32:45.765Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "shortName": "TR-CERT", "dateUpdated": "2026-05-21T14:08:15.591Z"}, "title": "OTP Bypass in TE\u0130A\u015e's Mobile Application", "datePublic": "2026-05-21T13:59:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-307", "description": "CWE-307 Improper restriction of excessive authentication attempts", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-112", "descriptions": [{"lang": "en", "value": "CAPEC-112 Brute Force"}]}], "affected": [{"vendor": "Turkiye Electricity Transmission Corporation (TE\u0130A\u015e)", "product": "Mobile Application", "versions": [{"status": "affected", "version": "1.6.2", "lessThan": "1.13", "versionType": "custom"}], "defaultStatus": "unaffected"}], "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TE\u0130A\u015e) Mobile Application allows Brute Force.<p>This issue affects Mobile Application: from 1.6.2 before 1.13.</p>"}]}], "references": [{"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286", "tags": ["government-resource"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N"}}], "credits": [{"lang": "en", "value": "Metin \u00d6GTEM", "type": "finder"}], "source": {"defect": ["TR-26-0286"], "advisory": "TR-26-0286", "discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-21T14:32:32.195470Z", "id": "CVE-2026-1816", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-21T14:32:45.765Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-1816", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-21T14:32:32.195470Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-21T14:32:42.400Z"}}], "cna": {"title": "OTP Bypass in TE\u0130A\u015e's Mobile Application", "source": {"defect": ["TR-26-0286"], "advisory": "TR-26-0286", "discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Metin \u00d6GTEM"}], "impacts": [{"capecId": "CAPEC-112", "descriptions": [{"lang": "en", "value": "CAPEC-112 Brute Force"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Turkiye Electricity Transmission Corporation (TE\u0130A\u015e)", "product": "Mobile Application", "versions": [{"status": "affected", "version": "1.6.2", "lessThan": "1.13", "versionType": "custom"}], "defaultStatus": "unaffected"}], "datePublic": "2026-05-21T13:59:00.000Z", "references": [{"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286", "tags": ["government-resource"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "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.", "supportingMedia": [{"type": "text/html", "value": "Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TE\u0130A\u015e) Mobile Application allows Brute Force.<p>This issue affects Mobile Application: from 1.6.2 before 1.13.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-307", "description": "CWE-307 Improper restriction of excessive authentication attempts"}]}], "providerMetadata": {"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "shortName": "TR-CERT", "dateUpdated": "2026-05-21T14:08:15.591Z"}}}, "cveMetadata": {"cveId": "CVE-2026-1816", "state": "PUBLISHED", "dateUpdated": "2026-05-21T14:32:45.765Z", "dateReserved": "2026-02-03T14:06:50.593Z", "assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "datePublished": "2026-05-21T14:08:15.591Z", "assignerShortName": "TR-CERT"}, "dataVersion": "5.2"}