CVE-2025-33066
published 2025-06-10CVE-2025-33066: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
PriorityP356high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.95%
57.3th percentile
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Affected
47 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21034 | 10.0.10240.21034 |
| microsoft | windows_10_1607 | < 10.0.14393.8148 | 10.0.14393.8148 |
| microsoft | windows_10_1809 | < 10.0.17763.7434 | 10.0.17763.7434 |
| microsoft | windows_10_21h2 | < 10.0.19044.5965 | 10.0.19044.5965 |
| microsoft | windows_10_22h2 | < 10.0.19045.5965 | 10.0.19045.5965 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21034 | 10.0.10240.21034 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8148 | 10.0.14393.8148 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7434 | 10.0.17763.7434 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.5965 | 10.0.19044.5965 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.5965 | 10.0.19045.5965 |
| microsoft | windows_11_22h2 | < 10.0.22621.5472 | 10.0.22621.5472 |
| microsoft | windows_11_23h2 | < 10.0.22631.5472 | 10.0.22631.5472 |
| microsoft | windows_11_24h2 | < 10.0.26100.4270 | 10.0.26100.4270 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5472 | 10.0.22621.5472 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5472 | 10.0.22631.5472 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5472 | 10.0.22631.5472 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4349 | 10.0.26100.4349 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27769 | 6.1.7601.27769 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23351 | 6.0.6003.23351 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25522 | 6.2.9200.25522 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22620 | 6.3.9600.22620 |
| microsoft | windows_server_2016 | < 10.0.14393.8148 | 10.0.14393.8148 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8148 | 10.0.14393.8148 |
Detection & IOCsextracted from sources · hover to see the quote
- →Attack vector is network-based and requires user interaction; a client must connect to a malicious server. Monitor for RRAS client connections to unexpected or external servers. ↗
- →Exploitation path involves a malicious server returning crafted data to trigger a heap-based buffer overflow in the RRAS client. Inspect RRAS traffic for anomalous or oversized response payloads. ↗
- →The vulnerability is a heap-based buffer overflow in Windows RRAS (svchost-hosted service). Monitor for unexpected crashes or heap corruption events in the RRAS service process. ↗
- ·Exploitation is currently assessed as unlikely; no public exploit or active exploitation has been confirmed as of the advisory date. ↗
- ·User interaction is required for exploitation (UI:R per CVSS), meaning the attack cannot be fully automated without social engineering a user to initiate a connection to a malicious server. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_msrc8.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-gjgx-8hwj-f6gq: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network
ghsa_unreviewed·2025-06-10
CVE-2025-33066 [HIGH] CWE-122 GHSA-gjgx-8hwj-f6gq: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Microsoft
Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
vendor_msrc·2025-06-10·CVSS 8.8
CVE-2025-33066 [HIGH] CWE-122 Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
Description: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
FAQ: According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.
FAQ: How could an attacker exploit this vulnerability?
An attacker could exploit this vulnerability by tricking a user into sending a request to a malicious server. This could result in the server returning malicious data that might cause arbitrar
No detection rules found.
No public exploits indexed.
Qualys
Microsoft and Adobe Patch Tuesday, June 2025 Security Update Review
blogs_qualys·2025-06-10
Microsoft and Adobe Patch Tuesday, June 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for June 2025
Adobe Patches for June 2025
Zero-day Vulnerabilities Patched in June Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in June Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response withPatch Management (PM)
Microsoft June 2025 Patch Tuesday Mitigations
Qualys Monthly Webinar Series
Microsoft’s June 2025 Patch Tuesday has landed, addressing a new batch of critical and important vulnerabilities across Windows and enterprise products. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for June 2025
In this month’s Patch Tuesday, June 2025
Qualys
Microsoft and Adobe Patch Tuesday, June 2025 Security Update Review | Qualys
blogs_qualys·2025-06-10
Microsoft and Adobe Patch Tuesday, June 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for June 2025
- Adobe Patches for June 2025
- Zero-day Vulnerabilities Patched in June Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in June Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- Microsoft June 2025 Patch Tuesday Mitigations
- Qualys Monthly Webinar Series
Microsoft’s June 2025 Patch Tuesday has landed, addressing a new batch of critical and important vulnerabilities across Windows and enterprise products. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for June 2025
In this month’s Patch Tuesd
Bleepingcomputer
Microsoft June 2025 Patch Tuesday fixes exploited zero-day, 66 flaws
blogs_bleepingcomputer·2025-06-10·CVSS 8.8
[HIGH] Microsoft June 2025 Patch Tuesday fixes exploited zero-day, 66 flaws
## Microsoft June 2025 Patch Tuesday fixes exploited zero-day, 66 flaws
## Lawrence Abrams
13 Elevation of Privilege Vulnerabilities
3 Security Feature Bypass Vulnerabilities
25 Remote Code Execution Vulnerabilities
17 Information Disclosure Vulnerabilities
6 Denial of Service Vulnerabilities
2 Spoofing Vulnerabilities
This count does not include Mariner, Microsoft Edge, and Power Automate flaws fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5060842 and KB5060999 cumulative updates and the Windows 10 KB5060533 cumulative update .
## Two zero-days
This month's Patch Tuesday fixes one actively exploited zero-day and one publicly disclosed vulnerability. Microsoft classifies a zero-day
2025-06-10
Published