What is CVE-2025-53720?

CVE-2025-53720 is a high-severity vulnerability in Microsoft Windows Server 2008, classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2025-08-12.

How severe is CVE-2025-53720?

High severity. CVSS v3 base score is 8.0 out of 10.

Is CVE-2025-53720 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Microsoft Windows Server 2008

CVE-2025-53720

Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

Vulnerability class: Buffer Overflow

Published 2025-08-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.001

Affected products

Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.7601.0
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core Installation) — versions 6.1.7601.0
Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.6003.0
Microsoft Windows Server 2008 Service Pack 2 (Server Core Installation) — versions 6.0.6003.0
Microsoft Windows Server 2012 — versions 6.2.9200.0
Microsoft Windows Server 2012 — versions r2
Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0
Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.9200.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53720 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-53720?: CVE-2025-53720 is a high-severity vulnerability in Microsoft Windows Server 2008, classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2025-08-12.
How severe is CVE-2025-53720?: High severity. CVSS v3 base score is 8.0 out of 10.
Is CVE-2025-53720 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.