{"api_version":"1","generated_at":"2026-06-14T02:57:49+00:00","cve":"CVE-2026-12183","urls":{"html":"https://cve.report/CVE-2026-12183","api":"https://cve.report/api/cve/CVE-2026-12183.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-12183","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-12183"},"summary":{"title":"CVE-2026-12183","description":"Nefteprodukttekhnika BUK TS-G Gas Station Automation System 2.9.1 through 2.10.2 on Linux contains an Improper Authentication vulnerability (CWE-287) in the system configuration module. The /php/ajax-login.php endpoint returns userid=1 (administrator) in response to any HTTP POST request that supplies arbitrary credentials (e.g., action=dologin&login=<any_value>&pwd=<any_value>), and subsequent privileged endpoints under /php/ajax-main.php and /modules/* do not validate a server-side session. 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The <code>/php/ajax-login.php</code> endpoint returns <code>userid=1</code> (administrator) in response to any HTTP POST request that supplies arbitrary credentials (e.g., <code>action=dologin&amp;login=&lt;any_value&gt;&amp;pwd=&lt;any_value&gt;</code>), and subsequent privileged endpoints under <code>/php/ajax-main.php</code> and <code>/modules/*</code> do not validate a server-side session. A remote unauthenticated attacker can invoke any administrative action exposed by the configuration module, including reading and modifying user rules, fuel tank gauges, fuel dispensers, relays, cash registers, bank terminals, fuel cards, price and customer displays, cash collection, and pricing rules.</p>"}],"value":"Nefteprodukttekhnika BUK TS-G Gas Station Automation System 2.9.1 through 2.10.2 on Linux contains an Improper Authentication vulnerability (CWE-287) in the system configuration module. The /php/ajax-login.php endpoint returns userid=1 (administrator) in response to any HTTP POST request that supplies arbitrary credentials (e.g., action=dologin&login=<any_value>&pwd=<any_value>), and subsequent privileged endpoints under /php/ajax-main.php and /modules/* do not validate a server-side session. A remote unauthenticated attacker can invoke any administrative action exposed by the configuration module, including reading and modifying user rules, fuel tank gauges, fuel dispensers, relays, cash registers, bank terminals, fuel cards, price and customer displays, cash collection, and pricing rules."}],"impacts":[{"descriptions":[{"lang":"en","value":"A remote unauthenticated attacker can perform any administrative action exposed by the configuration module, including reading and modifying user rules, fuel tank gauges, fuel dispensers (TRK), relays, cash registers, bank terminals, fuel cards and local payment cards, price and customer displays, cash collection, and pricing rules. No valid credentials and no user interaction are required."}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"An unauthenticated remote attacker reaches the BUK-TS Configuration Module login page, submits any password, and uses an HTTP-intercepting proxy to insert a userid field into the login response. 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This authentication-bypass issue is confirmed present in 2.9.1 and 2.10.2 - the 2.10.2 release fixed the SQL Injection (CVE-2026-3843) but did not address this separate auth-bypass bug. defaultStatus remains 'unknown' pending vendor confirmation of a fixed version. CVSS scoring is aligned with CVE-2026-3843 (VC:H/VI:H/VA:H, SC:L/SI:L/SA:L) so internal CNA scoring stays consistent across the product family. 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