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CVE-2026-4746

CRITICAL CVSS 4.0: 10.0 EPSS 0.04%
Updated Mar 24, 2026
Out-of-bounds
Parameter Value
CVSS 10.0 (CRITICAL)
Affected Versions before 1.6.16.
Type CWE-787 (Out-of-bounds Write)
Vendor Out-of-bounds
Public PoC No

Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is associated with program files inflate.C. This issue affects proton: before 1.6.16.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)