Is CVE-2022-35897 actively exploited?

No active exploitation of CVE-2022-35897 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-35897 be exploited remotely?

No. CVE-2022-35897 requires physical access to exploit.

What is the CVSS score of CVE-2022-35897?

CVE-2022-35897 has a CVSS score of 6.8 (MEDIUM).

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MEDIUM

CVE-2022-35897

CWE-787Published: November 21, 2022· Updated: Jun 17, 2026

6.8

CVSS v3.1

Official Description

An stack buffer overflow vulnerability leads to arbitrary code execution issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. If the attacker modifies specific UEFI variables, it can cause a stack overflow, leading to arbitrary code execution. The specific variables are normally locked (read-only) at the OS level and therefore an attack would require direct SPI modification. If an attacker can change the values of at least two variables out of three (SecureBootEnforce, SecureBoot, RestoreBootSettings), it is possible to execute arbitrary code.

NVD Source

Technical Analysis

CVE-2022-35897 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.