CVE-2022-26766: Input Validation

Published May 16, 2022
·
Updated

A certificate parsing issue was addressed with improved checks. This issue is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.4. A malicious app may be able to bypass signature validation.

Other sources

AMD. A buffer overflow issue was addressed with improved memory handling.

— Apple

AMD. A memory corruption issue was addressed with improved state management.

— Apple

apache. Multiple issues were addressed by updating apache to version 2.4.53.

— Apple

AppKit. A logic issue was addressed with improved validation.

— Apple

AppleAVD. An out-of-bounds write issue was addressed with improved bounds checking.

— Apple

Credit

Linus Henze(Pinauten GmbH), an anonymous researcher, Liu Long(Ant Security Light), Jack Dates(RET2 Systems Inc), Antonio Zekic@@antoniozekic, Jeonghoon Shin(Theori working with Trend Micro Zero Day Initiative), Peter Nguyễn Vũ Hoàng@@peternguyen14(STAR Labs), Ned Williamson(Google Project Zero), @@gorelics(BreakPoint), (BreakPoint), Ron Masas(BreakPoint), Wojciech Reguła@@_r3ggi(SecuRing), Arsenii Kostromin (0x3c3e)(Microsoft), Jonathan Bar Or(Microsoft), Zhipeng Huo@@R3dF09(Tencent Security Xuanwu Lab), Yuebin Sun@@yuebinsun2020(Tencent Security Xuanwu Lab), Max Shavrick@@_mxms(the Google Security Team), Zubair Ashraf(Crowdstrike), CVE-2022-0778, CVE-2022-23308, Mickey Jin@@patch1t, @@gorelics, Peter Nguyễn Vũ Hoàng(STAR Labs), Felix Poulin-Belanger, Antonio Cheong Yu Xuan(YCISCQ), Arsenii Kostromin (0x3c3e), CVE-2021-4136, CVE-2021-4166, CVE-2021-4173, CVE-2021-4187, CVE-2021-4192, CVE-2021-4193, CVE-2021-46059, CVE-2022-0128, Heige(KnownSec 404 Team), Bo Qu(Palo Alto Networks), Scarlet Raine, Wang Yu(Cyberserval), CVE-2022-0530, Tavis Ormandy, CVE-2021-45444, Yonghwi Jin@@jinmo123(Theori), Lockheed Martin Red Team, Jeremy Brown(Trend Micro Zero Day Initiative), Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), Qi Sun(Trend Micro), Ye Zhang@@co0py_Cat(Baidu Security), Robert Ai(Trend Micro), CVE-2021-44224, CVE-2021-44790, CVE-2022-22719, CVE-2022-22720, CVE-2022-22721, Paul Walker(Bury), Nathaniel Ekoniak(Ennate Technologies), Gergely Kalman@@gergely_kalman(Mandiant), (Mandiant), Joshua Mason(Mandiant), Ron Waisberg(SecuRing), an anonymous researcher(SecuRing), (Perception Point), Ron Hass@@ronhass7(Perception Point), ryuzaki, Chijin Zhou(ShuiMuYuLin Ltd), Tsinghua wingtecher lab, Jeonghoon Shin(Theori), SorryMybad@@S0rryMybad(Kunlun Lab), Dongzhuo Zhao(ADLab of Venustech), ABC Research s.r.o, Jon Thompson(Evolve), IA), actae0n(Blacksun Hackers Club working with Trend Micro Zero Day Initiative), Andrew Williams(Google), Avi Drissman(Google), chenyuwang@@mzzzz__(Tencent Security Xuanwu Lab), Jordy Zomer@@pwningsystems

Affected Software

27 affected componentsFixes available
Apple macOS Big Sur<11.6.6
11.6.6
Apple tvOS<15.5
15.5
Apple Catalina
Apple WatchOS<8.6
8.6
Apple macOS Monterey<12.4
12.4
Apple iOS<15.5
15.5
Apple iPadOS<15.5
15.5
Apple iPadOS<15.5
Apple iPhone OS<15.5
Apple iOS and macOS<10.15.7
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-security_update_2021-003
Apple iOS and macOS=10.15.7-security_update_2021-004
Apple iOS and macOS=10.15.7-security_update_2021-005
Apple iOS and macOS=10.15.7-security_update_2021-006
Apple iOS and macOS=10.15.7-security_update_2021-007
Apple iOS and macOS=10.15.7-security_update_2021-008
Apple iOS and macOS=10.15.7-security_update_2022-001
Apple iOS and macOS=10.15.7-security_update_2022-002
Apple iOS and macOS=10.15.7-security_update_2022-003
Apple macOS>=11.0<11.6.6
Apple macOS>=12.0<12.4
Apple tvOS<15.5
Apple WatchOS<8.6

Event History

May 16, 2022
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Description
Updated
via Apple·12:00 AM
DescriptionWeakness
May 26, 2022
CVE Published
via MITRE·07:22 PM
Data Sourced
via MITRE·07:22 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2022-26766?

CVE-2022-26766 is a certificate parsing issue that was addressed with improved checks.

2

Which software is affected by CVE-2022-26766?

CVE-2022-26766 affects Apple watchOS 8.6, Apple tvOS 15.5, Apple macOS Big Sur 11.6.6, Apple iOS 15.5, Apple iPadOS 15.5, and Apple macOS Monterey 12.4.

3

How can I fix CVE-2022-26766?

To fix CVE-2022-26766, update your software to the specified versions: Apple watchOS 8.6, Apple tvOS 15.5, Apple macOS Big Sur 11.6.6, Apple iOS 15.5, Apple iPadOS 15.5, or Apple macOS Monterey 12.4.

4

Where can I find more information about CVE-2022-26766?

You can find more information about CVE-2022-26766 at the following references: [Link 1](https://support.apple.com/en-us/HT213254), [Link 2](https://support.apple.com/en-us/HT213257), [Link 3](https://support.apple.com/en-us/HT213255).

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203