Log in Start free

Actively exploited · Published Aug 15, 2018 · Assigned by microsoft

CVE-2018-8373

High 7.5 Exploited

In plain English

A high-severity out-of-bounds write in Internet Explorer 10 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on March 25, 2022). The chance it is exploited in the next 30 days is estimated at 61.8% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)61.8%top 0.8% of all CVEs
Exploited in the wildYesCISA KEV since Mar 25, 2022
Attack tooling1Public PoC

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Apr 15, 2022.

Official description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

Affected products (as reported)

VendorProductVersions
Microsoft Internet Explorer 9 Windows Server 2008 for 32-bit Systems Service Pack 2Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft Internet Explorer 11 Windows 10 for 32-bit SystemsWindows 10 for x64-based SystemsWindows 10 Version 1607 for 32-bit SystemsWindows 10 Version 1607 for x64-based SystemsWindows 10 Version 1703 for 32-bit SystemsWindows 10 Version 1703 for x64-based SystemsWindows 10 Version 1709 for 32-bit SystemsWindows 10 Version 1709 for x64-based Systems
Microsoft Internet Explorer 10 Windows Server 2012

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References