CVE-2025-2764: CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability
Description
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of CarlinKit CPC200-CCPA devices. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the handling of update packages provided to update.cgi. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-24355.
Classification
CVE ID: CVE-2025-2764
CVSS Base Severity: HIGH
CVSS Base Score: 8.0
CVSS Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
Vendor: CarlinKit
Product: CPC200-CCPA
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.0% (scored less or equal to compared to others)
EPSS Date: 2025-05-22 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-2764https://www.zerodayinitiative.com/advisories/ZDI-25-178/