CVE-2021-26419

Name: CVE-2021-26419
Creator: NVD / NIST
Published: 2021-05-11T19:15:08.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 22.60%

Last modified Jun 17, 2026

CVE-2021-26419 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Scripting Engine Memory Corruption Vulnerability. EPSS estimates a 22.60% chance of exploitation in the next 30 days.

Description

Scripting Engine Memory Corruption Vulnerability

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

22.60%

97.4th 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	Internet Explorer	9

References

http://packetstormsecurity.com/files/162570/Internet-Explorer-jscript9.dll-Memory-Corruption.htmlExploit, Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26419Patch, Vendor Advisory
http://packetstormsecurity.com/files/162570/Internet-Explorer-jscript9.dll-Memory-Corruption.htmlExploit, Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26419Patch, Vendor Advisory

Timeline

Published: May 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26419?

Scripting Engine Memory Corruption Vulnerability

How severe is CVE-2021-26419?

CVE-2021-26419 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 22.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26419?

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-2021-26419?

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

Scan your code now

Source: NVD / NIST