Actively exploited · Published Feb 27, 2020 · Assigned by apple

CVE-2020-3837

High 7.8 Exploited

In plain English

A high-severity out-of-bounds write in iOS from Apple. Attackers are actively exploiting it in the wild (listed by CISA on June 27, 2022). The chance it is exploited in the next 30 days is estimated at 14.8% (higher than 97% of all known vulnerabilities). Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)14.8%top 3.3% of all CVEs

Exploited in the wildYesCISA KEV since Jun 27, 2022

Attack toolingNoneno public tooling known

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Jul 18, 2022.

Official description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. An application may be able to execute arbitrary code with kernel privileges.

Affected products (as reported)

Vendor	Product	Versions
Apple	iOS	unspecified – before iOS 13.3.1 and iPadOS 13.3.1
Apple	macOS	unspecified – before macOS Catalina 10.15.3
Apple	tvOS	unspecified – before tvOS 13.3.1
Apple	watchOS	unspecified – before watchOS 6.1.2

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

References

https://support.apple.com/HT210919 x_refsource_MISC
https://support.apple.com/HT210918 x_refsource_MISC
https://support.apple.com/HT210921 x_refsource_MISC
https://support.apple.com/HT210920 x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3837 government-resource