CVE-2018-0840

Name: CVE-2018-0840
Creator: NVD / NIST
Published: 2018-02-15T02:29:02.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 53.72%

Last modified Jun 17, 2026

CVE-2018-0840 is a vulnerability of currently unknown severity. Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.. EPSS estimates a 53.72% chance of exploitation in the next 30 days.

Description

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.

Metrics

EPSS Probability

53.72%

98.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Microsoft	Internet Explorer	11
Microsoft	Edge	All versions
Microsoft	Internet Explorer	10

References

http://www.securityfocus.com/bid/102886Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040369Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040372Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0840Patch, Vendor Advisory
https://www.exploit-db.com/exploits/44077/Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/102886Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040369Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040372Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0840Patch, Vendor Advisory
https://www.exploit-db.com/exploits/44077/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Feb 15, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0840?

How severe is CVE-2018-0840?

Severity scoring for CVE-2018-0840 is pending analysis. The EPSS model estimates a 53.72% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0840?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0840?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST