MEDIUM CISA KEV

CVE-2021-1879

CVSS v3

6.1

MEDIUM

EPSS Score

1.5%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited..

CISA Known Exploited Vulnerability

Date Added
11/3/2021
Patch Due Date
11/17/2021
Ransomware Use
Unknown

Technical details

Published
4/2/2021

Frequently asked questions

What is CVE-2021-1879?

This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited..

Is CVE-2021-1879 actively exploited?

Yes. CVE-2021-1879 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 11/17/2021.

What is the CVSS score for CVE-2021-1879?

CVE-2021-1879 has a CVSS v3 base score of 6.1 (MEDIUM severity).

Is CVE-2021-1879 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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