CVE-2026-4746 CRITICAL

CVE-2026-4746: Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton

Vendor Timeplus-Io

Product proton

Weakness CWE-787

Published March 24, 2026

Last update March 24, 2026

View on NVD All CVEs

CVSS base score

10.0/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality —

Integrity —

CVSS vector

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/S:N/AU:Y/R:U/V:C/RE:L/U:Amber

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 24, 2026 CVE published

March 24, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-4746 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/787.html

Related vulnerabilities

CVE-2026-4746: Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton

01Description

02Disclosure timeline

03References

04Related CVE