CVE-2025-53766: Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network

Critical severity · published Aug 12, 2025

CVE-2025-53766

Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network

9.8

CVSS

8.2%

EPSS

On KEV

Description

Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)8.2% · higher than 95% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Office · Microsoft

before 16.0.14326.22618 · source: NVD

365 Copilot · Microsoft

before 16.0.19127.20000 · source: NVD

Windows 10 1507 · Microsoft

before 10.0.10240.21100; before 10.0.10240.21100 · source: NVD

Windows 10 1607 · Microsoft

before 10.0.14393.8330; before 10.0.14393.8330 · source: NVD

Windows 10 1809 · Microsoft

before 10.0.17763.7678; before 10.0.17763.7678 · source: NVD

Windows 10 21h2 · Microsoft

before 10.0.19044.6216 · source: NVD

Windows 10 22h2 · Microsoft

before 10.0.19045.6216 · source: NVD

Windows 11 22h2 · Microsoft

before 10.0.22621.5768 · source: NVD

Windows 11 23h2 · Microsoft

before 10.0.22631.5768 · source: NVD

Windows 11 24h2 · Microsoft

before 10.0.26100.4851 · source: NVD

Windows Server 2008 · Microsoft

r2 · source: NVD

Windows Server 2012 · Microsoft

r2 · source: NVD

Affected product

Office

Microsoft

All Office CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-53766

CVE.org

https://www.cve.org/CVERecord?id=CVE-2025-53766

Vendor Advisory

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53766