CVE-2021-3778: Heap-based Buffer Overflow in vim/vim

Published Sep 15, 2021
·
Updated

vim is vulnerable to Heap-based Buffer Overflow

Affected Software

6 affected components
vim Vim<8.2.3409
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Debian Debian Linux=9.0
NetApp ONTAP Select Deploy administration utility

Event History

Sep 15, 2021
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:15 AM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is CVE-2021-3778?

CVE-2021-3778 is a vulnerability found in vim that allows for a heap-based buffer overflow.

2

What is the severity of CVE-2021-3778?

CVE-2021-3778 has a severity rating of high (7.8).

3

Which software versions are affected by CVE-2021-3778?

Versions up to and excluding Vim 8.2.3409, Fedora 33, Fedora 34, Fedora 35, Debian Linux 9.0, and NetApp ONTAP Select Deploy administration utility are affected by CVE-2021-3778.

4

How can I fix CVE-2021-3778?

To fix CVE-2021-3778, update your vim installation to a version that includes the fix, or follow the recommendations provided by the vendor or software developer.

5

Where can I find more information about CVE-2021-3778?

You can find more information about CVE-2021-3778 on the following references: [reference 1](http://www.openwall.com/lists/oss-security/2021/10/01/1), [reference 2](https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f), [reference 3](https://huntr.dev/bounties/d9c17308-2c99-4f9f-a706-f7f72c24c273).

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