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RBI Assistant Platform CVE-2025-62650

CRITICAL
Use of Client-Side Authentication (CWE-603)
2025-10-17 cve@mitre.org
9.9
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.9 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
vuln.today AI
9.9 CRITICAL

Client-side-only auth is remotely and trivially bypassable (AV:N/AC:L/PR:N/UI:N); diagnostic access chiefly discloses data (C:H) with limited I/A, and reaching an internal operational platform justifies scope change.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:N

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Oct 08, 2026 - 22:40 vuln.today
CVE Published
Oct 17, 2025 - 21:15 nvd
CRITICAL 9.9

DescriptionNVD

The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for use of the diagnostic screen.

AnalysisAI

Unauthenticated network attackers can gain access to the diagnostic screen of the Restaurant Brands International (RBI) assistant platform (versions through 2025-09-06) because the authorization check protecting that screen is enforced only in the client, allowing anyone to bypass it by tampering with JavaScript, manipulating local state, or calling the underlying endpoint directly. The flaw is rated CVSS 3.1 base 9.9 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L) and classified as CWE-603 (Use of Client-Side Authentication); exploitation requires no credentials and no user interaction, and the only practical barrier is network reachability of the platform and its diagnostic endpoint. No public exploit code was identified at time of analysis and there is no confirmed active exploitation (no CISA KEV listing), though the issue was publicly reported in September 2025 press coverage (Malwarebytes, Yahoo News, bobdahacker.com) linking the platform to Burger King, Popeyes and Tim Hortons drive-thru assistants. No vendor-released patch was identified at time of analysis.

Technical ContextAI

CWE-603 (Use of Client-Side Authentication) means the authentication/authorization gate for the diagnostic screen is implemented in code that executes on the user's browser rather than being enforced on the server. Because the decision is made client-side, an attacker can modify or skip the check entirely - for example by editing the JavaScript, altering local storage/session state, or simply invoking the diagnostic endpoint directly without ever loading the gated UI. The CVSS vector reflects this: scope change (S:C) captures the fact that a weakness in the client-side gating logic leaks access to server-side diagnostic functionality beyond the intended authorization boundary, while PR:N and UI:N confirm that no credentials and no victim interaction are needed. High confidentiality impact (C:H) is consistent with a diagnostic interface potentially exposing configuration, telemetry or internal data, whereas the low integrity and availability components (I:L/A:L) suggest a more limited ability to alter or disrupt the platform. The CPE cpe:2.3:a:rbi:restaurant_brands_international_assistant:*:*:*:*:*:*:*:* identifies the RBI assistant platform as the affected component across all versions up to the disclosure cutoff of 2025-09-06.

RemediationAI

No vendor-released patch was identified at time of analysis, so the primary remediation must be compensatory: enforce the authorization decision for the diagnostic screen server-side, so that every request to the diagnostic endpoint is re-validated against an authenticated session and the correct role regardless of what the client UI claims, which eliminates the bypass but requires development work on the platform backend. Until that is possible, remove or disable the diagnostic screen and its backing endpoint entirely in production and re-expose it only through an authenticated administrative interface on a management VLAN; the trade-off is loss of convenient field diagnostics for support staff. Where the endpoint cannot be removed, restrict network reachability with firewall/ACL rules or a reverse proxy so that only trusted management networks can reach it, and add WAF or gateway rules that reject requests to diagnostic paths lacking a valid server-side session token - a partial mitigation that still depends on correct path enumeration and can be bypassed by alternate routes. Finally, because the flaw is client-side by design, treat any prior exposure of the diagnostic screen as a potential information disclosure event and review logs for direct requests to diagnostic endpoints; there is no reference to a specific vendor advisory or fixed version, so monitoring the RBI vendor channels and the cited NVD references (including https://www.malwarebytes.com/blog/news/2025/09/popeyes-tim-hortons-burger-king-platforms-have-catastrophic-vulnerabilities-say-hackers) for an official fix is recommended.

CVE-2025-62645 CRITICAL POC
9.9 Oct 17

The Restaurant Brands International (RBI) assistant platform (versions through 2025-09-06) improperly grants administrat

CVE-2025-62643 HIGH POC
8.6 Oct 17

Cleartext credential disclosure in the Restaurant Brands International (RBI) assistant platform (versions through 2025-0

CVE-2025-62646 HIGH POC
7.7 Oct 17

Stored audio of Drive Thru conversations between associates and customers on the Restaurant Brands International (RBI) a

CVE-2025-62644 HIGH POC
7.7 Oct 17

Information disclosure in the Restaurant Brands International (RBI) assistant platform (the corporate platform behind Bu

CVE-2025-62649 MEDIUM POC
5.8 Oct 17

The Restaurant Brands International (RBI) assistant platform, in all versions through 2025-09-06, performs authorization

CVE-2025-62648 MEDIUM POC
5.8 Oct 17

The Restaurant Brands International (RBI) assistant platform, used across brands such as Burger King, Popeyes, and Tim H

CVE-2025-62651 MEDIUM POC
5.8 Oct 17

Missing access control in the Restaurant Brands International (RBI) assistant platform (all versions through 2025-09-06)

CVE-2025-62647 MEDIUM POC
5.8 Oct 17

Broken authorization in the Restaurant Brands International (RBI) 'assistant' platform (as it operated through 2025-09-0

CVE-2025-62642 HIGH
8.6 Oct 17

Remote unauthenticated account creation in the RBI Assistant platform through 2025-09-06 allows attackers to provision a

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CVE-2025-62650 vulnerability details – vuln.today

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