What is the severity of CVE-2020-11881?

CVE-2020-11881 has a severity rating that allows unauthenticated remote attackers to crash the SMB server.

How do I fix CVE-2020-11881?

To fix CVE-2020-11881, upgrade MikroTik RouterOS to a version that is not affected, specifically beyond 6.46.5 or 7.0 Beta5.

What versions of RouterOS are affected by CVE-2020-11881?

CVE-2020-11881 affects MikroTik RouterOS versions 6.41.3 to 6.46.5 and versions 7.0 Beta3 to 7.0 Beta5.

Can CVE-2020-11881 be exploited remotely?

Yes, CVE-2020-11881 can be exploited remotely by unauthenticated attackers.

What impact does CVE-2020-11881 have on MikroTik devices?

CVE-2020-11881 can cause the SMB server on MikroTik devices to crash due to an array index error.

Vulnerability/
CVE-2020-11881

high

7.5

CWE

129

14/9/2020

4/8/2024

CVE-2020-11881: Out-of-bounds Read

First published: Mon Sep 14 2020(Updated: )

An array index error in MikroTik RouterOS 6.41.3 through 6.46.5, and 7.x through 7.0 Beta5, allows an unauthenticated remote attacker to crash the SMB server via modified setup-request packets, aka SUP-12964.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
MikroTik devices	>=6.41.3<=6.46.5
MikroTik devices	=7.0-beta3
MikroTik devices	=7.0-beta4
MikroTik devices	=7.0-beta5

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2020-11881?
CVE-2020-11881 has a severity rating that allows unauthenticated remote attackers to crash the SMB server.
How do I fix CVE-2020-11881?
To fix CVE-2020-11881, upgrade MikroTik RouterOS to a version that is not affected, specifically beyond 6.46.5 or 7.0 Beta5.
What versions of RouterOS are affected by CVE-2020-11881?
CVE-2020-11881 affects MikroTik RouterOS versions 6.41.3 to 6.46.5 and versions 7.0 Beta3 to 7.0 Beta5.
Can CVE-2020-11881 be exploited remotely?
Yes, CVE-2020-11881 can be exploited remotely by unauthenticated attackers.
What impact does CVE-2020-11881 have on MikroTik devices?
CVE-2020-11881 can cause the SMB server on MikroTik devices to crash due to an array index error.

agent/references
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/severity
agent/weakness
agent/last-modified-date
agent/author
agent/event
agent/description
agent/first-publish-date
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/mikrotik
canonical/mikrotik devices
version/mikrotik devices/6.41.3
version/mikrotik devices/6.46.5
version/mikrotik devices/7.0-beta3
version/mikrotik devices/7.0-beta4
version/mikrotik devices/7.0-beta5

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.

Frequently Asked Questions

What is the severity of CVE-2020-11881?
CVE-2020-11881 has a severity rating that allows unauthenticated remote attackers to crash the SMB server.
How do I fix CVE-2020-11881?
To fix CVE-2020-11881, upgrade MikroTik RouterOS to a version that is not affected, specifically beyond 6.46.5 or 7.0 Beta5.
What versions of RouterOS are affected by CVE-2020-11881?
CVE-2020-11881 affects MikroTik RouterOS versions 6.41.3 to 6.46.5 and versions 7.0 Beta3 to 7.0 Beta5.
Can CVE-2020-11881 be exploited remotely?
Yes, CVE-2020-11881 can be exploited remotely by unauthenticated attackers.
What impact does CVE-2020-11881 have on MikroTik devices?
CVE-2020-11881 can cause the SMB server on MikroTik devices to crash due to an array index error.