CVE-2021-43522

HighCVSS 7.5/10Last modified Aug 11, 2026

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Feb 3, 2022
Last modified: Aug 11, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-435239.6In uClibc and uClibc-ng before 1.0.39, incorrect handling of special characters in domain names returned by DNS servers via gethostbyname, g CVE-2021-435279.8NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-CVE-2021-435286.5Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not r CVE-2021-435299.8Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunde CVE-2021-43535.3The WooCommerce Dynamic Pricing and Discounts plugin for WordPress is vulnerable to unauthenticated settings export in versions up to, and i CVE-2021-435306.1A Universal XSS vulnerability was present in Firefox for Android resulting from improper sanitization when processing a URL scanned from a Q CVE-2021-435314.3When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Ex CVE-2021-435326.1The 'Copy Image Link' context menu action would copy the final image URL after redirects. By embedding an image that triggered authenticatio CVE-2021-435334.3When parsing internationalized domain names, high bits of the characters in the URLs were sometimes stripped, resulting in inconsistencies t CVE-2021-435348.8Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed e CVE-2021-435358.8A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a pote CVE-2021-435366.5Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability aff