#VU7746 Privilege escalation in Microsoft Edge - CVE-2017-8503

Vulnerability identifier: #VU7746

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-8503

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Microsoft Edge
Client/Desktop applications / Web browsers

Vendor: Microsoft

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to improper access controls. A local attacker can gain elevated privileges and break out of the Edge AppContainer sandbox.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge: All versions

---

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8503

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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