high
7.8
CWE
20 416 119 190 362
Advisory Published
Updated

CVE-2021-45444: Input Validation

First published: Sun Feb 13 2022(Updated: )

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

Credit: CVE-2021-45444 Arsenii Kostromin (0x3c3e) MicrosoftJonathan Bar Or MicrosoftZhipeng Huo @R3dF09 Tencent Security Xuanwu LabYuebin Sun @yuebinsun2020 Tencent Security Xuanwu LabMax Shavrick @_mxms the Google Security TeamZubair Ashraf CrowdstrikeCVE-2022-0778 CVE-2022-23308 Mickey Jin @patch1t @gorelics an anonymous researcher Linus Henze Pinauten GmbHPeter Nguyễn Vũ Hoàng STAR LabsFelix Poulin-Belanger Antonio Cheong Yu Xuan YCISCQArsenii 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 TeamBo Qu Palo Alto NetworksScarlet Raine Wang Yu CyberservalCVE-2022-0530 Tavis Ormandy Liu Long Ant Security LightJack Dates RET2 Systems IncAntonio Zekic @antoniozekic Jeonghoon Shin Theori working with Trend Micro Zero Day InitiativePeter Nguyễn Vũ Hoàng @peternguyen14 STAR LabsNed Williamson Google Project Zero @gorelics BreakPoint BreakPointRon Masas BreakPointWojciech Reguła @_r3ggi SecuRingYonghwi Jin @jinmo123 TheoriLockheed Martin Red Team Jeremy Brown Trend Micro Zero Day InitiativeMichael DePlante @izobashi Trend Micro Zero Day InitiativeQi Sun Trend MicroYe Zhang @co0py_Cat Baidu SecurityRobert Ai Trend MicroCVE-2021-44224 CVE-2021-44790 CVE-2022-22719 CVE-2022-22720 CVE-2022-22721 Paul Walker BuryNathaniel Ekoniak Ennate TechnologiesGergely Kalman @gergely_kalman Mandiant MandiantJoshua Mason MandiantRon Waisberg SecuRingan anonymous researcher SecuRing Perception PointRon Hass @ronhass7 Perception Pointryuzaki Chijin Zhou ShuiMuYuLin LtdTsinghua wingtecher lab Jeonghoon Shin TheoriSorryMybad @S0rryMybad Kunlun LabDongzhuo Zhao ADLab of VenustechABC Research s.r.o Jon Thompson EvolveIA) actae0n Blacksun Hackers Club working with Trend Micro Zero Day InitiativeAndrew Williams GoogleAvi Drissman Googlechenyuwang @mzzzz__ Tencent Security Xuanwu LabJordy Zomer @pwningsystems cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/zsh
5.7.1-1+deb10u1
5.8-6+deb11u1
5.9-4
5.9-5
Apple macOS Monterey<12.4
12.4
Apple macOS<11.6.6
11.6.6
macOS Catalina
Z Shell (zsh)<5.8.1
Fedora=34
Fedora=35
Debian=9.0
Debian=10.0
Debian=11.0
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
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_2021-006
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 iOS and macOS>=11.0<11.6.6
Apple iOS and macOS>=12.0.0<12.4

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-45444?

    CVE-2021-45444 is a vulnerability in zsh that was addressed by updating to zsh version 5.8.1.

  • Which software versions are affected by CVE-2021-45444?

    CVE-2021-45444 affects Apple macOS Catalina, macOS Big Sur (up to version 11.6.6), and macOS Monterey (up to version 12.4).

  • How do I fix CVE-2021-45444?

    To fix CVE-2021-45444, update to zsh version 5.8.1.

  • Where can I find more information about CVE-2021-45444?

    You can find more information about CVE-2021-45444 at the following references: [Link 1](https://support.apple.com/en-us/HT213257), [Link 2](https://support.apple.com/en-us/HT213255), [Link 3](https://support.apple.com/en-us/HT213256).

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.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203