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Known exploited vulnerability

CVE-2019-1429

highCVSS 3.1 7.5In CISA KEVEPSS 77%Published · Microsoft

The short answer

CVE-2019-1429 affects Microsoft Internet Explorer 9 and is rated high (CVSS 7.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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 CVE ID is unique from CVE-2019-1426, CVE-2019-1427, CVE-2019-1428.

Weakness: CWE-416, CWE-787.

Severity

7.5 high

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

Exploited (CISA KEV)

Yes, since Nov 3, 2021

Federal due date May 3, 2022

EPSS, next 30 days

77%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Internet Explorer 9, Internet Explorer 11, Internet Explorer 11 on Windows Server 2012, Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems, Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems, Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems, Internet Explorer 10. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2019-1429 being exploited?

Yes. CISA added CVE-2019-1429 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.

How do I fix CVE-2019-1429?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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