CVE-2026-4746

CRITICAL EPSS 19.3%

Published Mar 24, 20263mo ago · Modified Jun 17, 20262w ago

10.0 CVSS 4.0

Critical

Published Mar 24, 2026 3mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

10.0

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:L/U:Amber

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope N

Threat Intelligence

EPSS Exploit Probability

19.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

References 1

github.com https://github.com/timeplus-io/proton/pull/943

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.