Multiple vulnerabilities in Microsoft Edge



| Updated: 2025-07-03
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2025-4664
CVE-2025-4609
CWE-ID CWE-264
CWE-119
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
 Microsoft Edge
Client/Desktop applications / Web browsers

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU109187

Risk: High

CVSSv4.0: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2025-4664

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient policy enforcement in Loader. A remote attacker can trick the victim into visiting a specially crafted website and bypass implemented security restrictions.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Microsoft Edge: 100.0.1185.29 - 136.0.3240.64

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-4664


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Buffer overflow

EUVDB-ID: #VU109188

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-4609

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Mojo. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from Microsoft website.

Vulnerable software versions

Microsoft Edge: 100.0.1185.29 - 136.0.3240.64

CPE2.3 External links

https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-4609


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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