CVE-2020-1092: microsoft internet_explorer Out-of-bounds Write

Vulnerability summary

CVE-2020-1092 is a high (CVSS 7.6) Out-of-bounds Write vulnerability in microsoft internet_explorer. EPSS estimates a 3.20% chance of exploitation in the next 30 days, higher than 87.9% of scored vulnerabilities.

Timeline

1. 21-05-2020
   PublishedVulnerability first disclosed.
2. 19-08-2026
   Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The security update addresses the vulnerability by modifying how Internet Explorer handles objects in memory.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.