#VU88412 Stack-based buffer overflow in Windows Server - CVE-2024-20688

Vulnerability identifier: #VU88412

Vulnerability risk: Medium

CVSSv4.0: 4.4 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-20688

CWE-ID: CWE-121

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary error in Secure Boot. A remote unauthenticated attacker on the local network can trigger stack-based buffer overflow and bypass Secure Boot.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2012 R2 - 2012, 2019 10.0.17763.1 - 2019 2004, 2022 10.0.20348.202 - 2022 23H2

---

External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20688

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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