SB2025121515 - Multiple vulnerabilities in Microsoft Edge

Description

This security bulletin contains information about 4 vulnerabilities.

1) Improperly implemented security check for standard (CVE-ID: CVE-2025-14373)

CWE-ID: CWE-358 - Improperly Implemented Security Check for Standard

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

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect implementation in Toolbar in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.

2) Use-after-free (CVE-ID: CVE-2025-14372)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within Password Manager in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a use-after-free error and gain access to sensitive information.

3) Out-of-bounds write (CVE-ID: CVE-2025-14174)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 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:A/U:Red

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in ANGLE. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds write and execute arbitrary code on the target system.

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

4) Spoofing attack (CVE-ID: CVE-2025-65046)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data. A malicious website can show an extension's popup over a permission prompt or screen share dialog allowing the extension to spoof parts of the prompt's UI that shows its origin.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-14373
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-14372
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-14174
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-65046