CVE-2025-64678
published 2025-12-09CVE-2025-64678: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
PriorityP259high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.04%
60.2th percentile
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Affected
45 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1607 | < 10.0.14393.8594 | 10.0.14393.8594 |
| microsoft | windows_10_1809 | < 10.0.17763.8027 | 10.0.17763.8027 |
| microsoft | windows_10_21h2 | < 10.0.19044.6575 | 10.0.19044.6575 |
| microsoft | windows_10_22h2 | < 10.0.19045.6575 | 10.0.19045.6575 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8594 | 10.0.14393.8594 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.8027 | 10.0.17763.8027 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6575 | 10.0.19044.6575 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6575 | 10.0.19045.6575 |
| microsoft | windows_11_23h2 | < 10.0.22631.6199 | 10.0.22631.6199 |
| microsoft | windows_11_24h2 | < 10.0.26100.7092 | 10.0.26100.7092 |
| microsoft | windows_11_25h2 | < 10.0.26200.7092 | 10.0.26200.7092 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.6199 | 10.0.22631.6199 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.6199 | 10.0.22631.6199 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.7171 | 10.0.26100.7171 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.7171 | 10.0.26200.7171 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.28021 | 6.1.7601.28021 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23624 | 6.0.6003.23624 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25768 | 6.2.9200.25768 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22869 | 6.3.9600.22869 |
| microsoft | windows_server_2016 | < 10.0.14393.8594 | 10.0.14393.8594 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8594 | 10.0.14393.8594 |
| microsoft | windows_server_2019 | < 10.0.17763.8027 | 10.0.17763.8027 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.8027 | 10.0.17763.8027 |
Detection & IOCsextracted from sources · hover to see the quote
- →Attack vector requires an authenticated domain user to be tricked into sending a request to a malicious server via the RRAS Snap-in, which then returns malicious data triggering the heap overflow — monitor for unusual RRAS Snap-in connections to external or untrusted servers ↗
- →Focus detection on heap-based buffer overflow conditions within the Windows RRAS service (svchost hosting RRAS / remoteaccess) triggered by network-delivered malicious responses ↗
- ·No public exploit exists as of the advisory date; exploitation is assessed as 'Less Likely' by Microsoft, reducing immediate urgency but not eliminating risk ↗
- ·Exploitation requires the victim to be domain-joined and authenticated, limiting the attack surface to domain environments where users interact with the RRAS Snap-in ↗
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
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GHSA
GHSA-h5v5-598w-cqh3: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network
ghsa_unreviewed·2025-12-09
CVE-2025-64678 [HIGH] CWE-122 GHSA-h5v5-598w-cqh3: 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·2025-12-09·CVSS 8.8
CVE-2025-64678 [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: How could an attacker exploit this vulnerability?
An attacker authenticated on the domain could exploit this vulnerability by tricking a domain-joined user into sending a request to a malicious server via the Routing and Remote Access Service (RRAS) Snap-in. This could result in the server returning malicious data that might cause arbitrary code execution on the user's system.
Windows Routing and Remote Access Service (RRAS): Windows Routing and Remote Access Service (RRAS)
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Remote Cod
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
blogs_bleepingcomputer·2025-12-09·CVSS 7.8
[HIGH] Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
## Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
## Lawrence Abrams
28 Elevation of Privilege Vulnerabilities
19 Remote Code Execution Vulnerabilities
4 Information Disclosure Vulnerabilities
3 Denial of Service Vulnerabilities
2 Spoofing Vulnerabilities
When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include Microsoft Edge (15 flaws) and Mariner vulnerabilities fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5072033 & KB5071417 cumulative updates .
If you're facing delays, blind spots, or prioritization issues with Patch Tuesday updates, our recent webinar with
Wiz
CVE-2025-64678 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2025-64678 [HIGH] CVE-2025-64678 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-64678 :
vulnerability analysis and mitigation
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Source : NVD
## 8.8
Score
Published December 9, 2025
Severity HIGH
CNA Score 8.8
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 17.9
Exploitation Probability (EPSS) 0.1
Sources
NVD
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2025-12-09
Published