CVE-2024-21786: An OS command injection vulnerability exists in the web interface configuration upload functionality of MC Tec

This week

HIGH 7.2MITIGATE

CVE-2024-21786 is a high-severity flaw (CVSS 7.2) affecting mc lr router firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An OS command injection vulnerability exists in the web interface configuration upload functionality of MC Technologies MC LR Router 2.10.5. A specially crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	10.4% (top 4%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-11-21
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: mc-technologies

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-21 15:15 UTCPublished CVE record published
2026-06-17 07:10 UTCUpdated Record last modified

mc-technologies mc lr router firmware MITIGATE

Affected: 2.10.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.10.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-21786?

mc lr router firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-21786 being exploited?

CVE-2024-21786 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-21786 affect?

CVE-2024-21786 affects mc lr router firmware. Severity is high (CVSS 7.2). An OS command injection vulnerability exists in the web interface configuration upload functionality of MC Technologies MC LR Router 2.10.5. A specially crafted HTTP request can lead to arbitrary command execution. An attacker can make an a

How urgent is CVE-2024-21786?

Priority 54/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2024-28027 HIGH 7.2 MITIGATE Three OS command injection vulnerabilities exist in the web interface I/O configuration functionality of MC Te
CVE-2024-28026 HIGH 7.2 MITIGATE Three OS command injection vulnerabilities exist in the web interface I/O configuration functionality of MC Te
CVE-2024-28025 HIGH 7.2 MITIGATE Three OS command injection vulnerabilities exist in the web interface I/O configuration functionality of MC Te

References

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