Internet Explorer
CVE-2025-59295 — Windows URL Parsing Remote Code Execution Vulnerability
Executive Summary
Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network.
Overview
8.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7
EPSS Score
0.01791
probability of exploitation in the next 30 days
0.75516 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
29 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 5066837 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 5066837 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 5066836 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5066836 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5066586 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5066586 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5066791 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for ARM64-based Systems | 5066793 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for x64-based Systems | 5066793 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for ARM64-based Systems | 5066793 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for x64-based Systems | 5066793 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 25H2 for ARM64-based Systems | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 25H2 for x64-based Systems | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 5066874 (Monthly Rollup) 5066877 (Security Only) 5066840 (IE Cumulative) Important Remote Code Execution 5065508 5065435 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23571 1.000 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5066874 (Monthly Rollup) 5066877 (Security Only) 5066840 (IE Cumulative) Important Remote Code Execution 5065508 5065435 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23571 1.000 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 5066874 (Monthly Rollup) 5066877 (Security Only) 5066840 (IE Cumulative) Important Remote Code Execution 5065508 5065435 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23571 1.000 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5066874 (Monthly Rollup) 5066877 (Security Only) 5066840 (IE Cumulative) Important Remote Code Execution 5065508 5065435 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23571 1.000 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 5066840 (IE Cumulative) 5066872 (Monthly Rollup) 5066876 (Security Only) Important Remote Code Execution 5065435 5065468 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.1.7601.27974 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5066840 (IE Cumulative) 5066872 (Monthly Rollup) 5066876 (Security Only) Important Remote Code Execution 5065435 5065468 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.1.7601.27974 Yes None Windows Server 2012 5066840 (IE Cumulative) 5066875 (Monthly Rollup) Important Remote Code Execution 5065435 5065509 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.2.9200.25722 Yes None Windows Server 2012 (Server Core installation) 5066840 (IE Cumulative) 5066875 (Monthly Rollup) Important Remote Code Execution 5065435 5065509 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.2.9200.25722 Yes None Windows Server 2012 R2 5066840 (IE Cumulative) 5066873 (Monthly Rollup) Important Remote Code Execution 5065435 5065507 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.3.9600.22824 Yes None Windows Server 2012 R2 (Server Core installation) 5066840 (IE Cumulative) 5066873 (Monthly Rollup) Important Remote Code Execution 5065435 5065507 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.000 6.3.9600.22824 Yes None Windows Server 2016 | 5066836 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 5066836 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2019 | 5066586 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 5066586 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022 | 5066782 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022 (Server Core installation) | 5066782 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5066780 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2025 | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2025 (Server Core installation) | 5066835 (Security Update) |
Important | Remote Code Execution | Yes |
Patches
8 patches
| Article | Type | Restart |
|---|---|---|
5066837 |
Security Update | Yes |
5066836 |
Security Update | Yes |
5066586 |
Security Update | Yes |
5066791 |
Security Update | Yes |
5066793 |
Security Update | Yes |
5066835 |
Security Update | Yes |
5066782 |
Security Update | Yes |
5066780 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
References
On This Page