CVE-2026-4746
Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton
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 profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton
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.
- Record
CVE-2026-4746- CVSS 4.0
- 10.0 Critical
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 - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2026-14745
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.
- Record
EUVD-2026-14745- CVSS 4.0
- 10.0 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-ch4h-8w5c-3g8g
Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This...
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.
- Record
GHSA-ch4h-8w5c-3g8g- CVSS 4.0
- 10.0 Critical
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 - Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-4746- CVSS 4.0
- 10.0 Critical
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 - Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton
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.
- Record
CVE-2026-4746- CVSS 4.0
- 10.0 Critical
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 - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVAZL-80837 No score
CVE-2026-4746 affecting package fltk 1.3.8-1
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.
- Record
AZL-80837- Updated
- 2026-11-05
OSVAZL-80840 No score
CVE-2026-4746 affecting package gpsbabel 1.8.0-4
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.
- Record
AZL-80840- Updated
- 2026-11-05
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-4746 is a critical vulnerability (CVSS 10.0) in Timeplus-io Proton, published March 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. No source names a fixed version.