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  3. CVE-2020-27932
Known Exploited Vulnerability
9.3
HIGH CVSS 2.0
CVE-2020-27932
Apple Multiple Products Type Confusion Vulnerability - [Actively Exploited]
Overview
Description

A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to execute arbitrary code with kernel privileges.

Details
INFO

Published Date :

Dec. 8, 2020, 9:15 p.m.

Last Modified :

Oct. 27, 2025, 5:38 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Apple iOS, iPadOS, macOS, and watchOS contain a type confusion vulnerability that may allow a malicious application to execute code with kernel privileges.

Required Action :

Apply updates per vendor instructions.

Known Ransomware Campaign Use:

Unknown

Notes :

https://nvd.nist.gov/vuln/detail/CVE-2020-27932

Impact
Affected Products

The following products are affected by CVE-2020-27932 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apple macos
2 Apple itunes
3 Apple mac_os_x
4 Apple iphone_os
5 Apple watchos
6 Apple icloud
7 Apple ipados
: Total Affected Vendor : 1 | Products : 7
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
This vulnerability impacts multiple Apple products and can be remediated by upgrading to the latest available versions.
  • Upgrade to iOS 12.4.9 or later.
  • Upgrade to iOS 14.2 or later.
  • Upgrade to macOS 10.15.7 or later.
  • Upgrade to macOS 11.0.1 or later.
  • Upgrade to watchOS 5.3.9 or later.
  • Upgrade to watchOS 6.2.9 or later.
Public PoC/Exploit Available at Github

CVE-2020-27932 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-27932.

URL Resource
http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List Third Party Advisory
https://support.apple.com/en-us/HT211928 Vendor Advisory
https://support.apple.com/en-us/HT211929 Vendor Advisory
https://support.apple.com/en-us/HT211931 Vendor Advisory
https://support.apple.com/en-us/HT211940 Vendor Advisory
https://support.apple.com/en-us/HT211944 Vendor Advisory
https://support.apple.com/en-us/HT211945 Vendor Advisory
https://support.apple.com/en-us/HT211946 Vendor Advisory
https://support.apple.com/en-us/HT211947 Vendor Advisory
http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List Third Party Advisory
https://support.apple.com/en-us/HT211928 Vendor Advisory
https://support.apple.com/en-us/HT211929 Vendor Advisory
https://support.apple.com/en-us/HT211931 Vendor Advisory
https://support.apple.com/en-us/HT211940 Vendor Advisory
https://support.apple.com/en-us/HT211944 Vendor Advisory
https://support.apple.com/en-us/HT211945 Vendor Advisory
https://support.apple.com/en-us/HT211946 Vendor Advisory
https://support.apple.com/en-us/HT211947 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27932 US Government Resource
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-27932 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-27932 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
zeroxjf/iOS-Coruna-Reconstruction

Reverse-engineering reconstruction of the Coruna iOS exploit kit (iOS 16/17 chains)

C Python

Updated: 2 days, 7 hours ago
34 stars 5 fork 5 watcher
Born at : March 14, 2026, 7:27 p.m. This repo has been linked 12 different CVEs too.
Profile Photo
Ostorlab/KEV

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 1 week ago
607 stars 44 fork 44 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1295 different CVEs too.
Profile Photo
houjingyi233/macOS-iOS-system-security

Here is some resources about macOS/iOS system security.

Updated: 8 months ago
519 stars 55 fork 55 watcher
Born at : Aug. 26, 2020, 8:21 a.m. This repo has been linked 167 different CVEs too.
Profile Photo
Proteas/apple-cve

apple cve list

Updated: 2 months, 2 weeks ago
159 stars 16 fork 16 watcher
Born at : Jan. 7, 2019, 12:12 p.m. This repo has been linked 60 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-27932 vulnerability anywhere in the article.

  • Ars Technica
Feds take notice of iOS vulnerabilities exploited under mysterious circumstances

Coruna is also notable for its use by three distinct hacking groups. Google first detected its use in February of last year in an operation conducted by a “customer of a surveillance vendor.” The vuln ... Read more

Published Date: Mar 06, 2026 (2 weeks, 2 days ago)
  • Daily CyberSecurity
Coruna: The High-Powered iOS Exploit Kit Proliferating Across the Global Threat Landscape

Coruna iOS exploit kit timeline The Google Threat Intelligence Group (GTIG) has detailed the curtain on “Coruna,” a formidable iOS exploit kit that has transitioned from the hands of commercial survei ... Read more

Published Date: Mar 05, 2026 (2 weeks, 4 days ago)
  • The Register
Kaspersky dismisses claims Coruna iPhone exploit kit is connected to NSA-linked operation

Russian cybersecurity outfit Kaspersky is waving away claims that an iPhone exploit kit recently uncovered by Google was developed by the same people who were behind a group of zero-days that allegedl ... Read more

Published Date: Mar 04, 2026 (2 weeks, 5 days ago)
  • The Hacker News
Coruna iOS Exploit Kit Uses 23 Exploits Across Five Chains Targeting iOS 13–17.2.1

Google said it identified a "new and powerful" exploit kit dubbed Coruna (aka CryptoWaters) targeting Apple iPhone models running iOS versions between 13.0 and 17.2.1. The exploit kit featured five fu ... Read more

Published Date: Mar 04, 2026 (2 weeks, 5 days ago)
  • Google Cloud
Coruna: The Mysterious Journey of a Powerful iOS Exploit Kit

Introduction Google Threat Intelligence Group (GTIG) has identified a new and powerful exploit kit targeting Apple iPhone models running iOS version 13.0 (released in September 2019) up to version 17. ... Read more

Published Date: Mar 03, 2026 (2 weeks, 6 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2020-27932 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Oct. 27, 2025

    Action Type Old Value New Value
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27932 Types: US Government Resource
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 22, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27932
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2025

    Action Type Old Value New Value
    Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27932
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2025

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27932
  • Modified Analysis by [email protected]

    Apr. 02, 2025

    Action Type Old Value New Value
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jan. 29, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-843
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html
    Added Reference http://seclists.org/fulldisclosure/2020/Dec/32
    Added Reference https://support.apple.com/en-us/HT211928
    Added Reference https://support.apple.com/en-us/HT211929
    Added Reference https://support.apple.com/en-us/HT211931
    Added Reference https://support.apple.com/en-us/HT211940
    Added Reference https://support.apple.com/en-us/HT211944
    Added Reference https://support.apple.com/en-us/HT211945
    Added Reference https://support.apple.com/en-us/HT211946
    Added Reference https://support.apple.com/en-us/HT211947
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Feb. 11, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html No Types Assigned http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2020/Dec/32 No Types Assigned http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    Feb. 05, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.html [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 15, 2020

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2020/Dec/32 [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 09, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.apple.com/en-us/HT211928 No Types Assigned https://support.apple.com/en-us/HT211928 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211929 No Types Assigned https://support.apple.com/en-us/HT211929 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211931 No Types Assigned https://support.apple.com/en-us/HT211931 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211940 No Types Assigned https://support.apple.com/en-us/HT211940 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211944 No Types Assigned https://support.apple.com/en-us/HT211944 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211945 No Types Assigned https://support.apple.com/en-us/HT211945 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211946 No Types Assigned https://support.apple.com/en-us/HT211946 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT211947 No Types Assigned https://support.apple.com/en-us/HT211947 Vendor Advisory
    Added CWE NIST CWE-843
    Added CPE Configuration OR *cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* versions up to (excluding) 11.5 *cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* versions up to (excluding) 12.11 *cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* versions up to (excluding) 14.2 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 12.4.9 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions from (including) 14.0 up to (excluding) 14.2 *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.15.7 *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.0.1 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (excluding) 5.3.9 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.2.9 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 9.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
EPSS
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

12.50 }} 0.83%

score

0.93850

percentile