CVE-2024-21785

Name: CVE-2024-21785
Creator: NVD / NIST
Published: 2024-05-28T16:15:12.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.51%

Last modified Jun 17, 2026

CVE-2024-21785 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A leftover debug code vulnerability exists in the Telnet Diagnostic Interface functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted series of network requests can lead to unauthorized access. EPSS estimates a 1.51% chance of exploitation in the next 30 days.

Description

A leftover debug code vulnerability exists in the Telnet Diagnostic Interface functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted series of network requests can lead to unauthorized access. An attacker can send a sequence of requests to trigger this vulnerability.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.51%

71.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-489

Affected Software

Vendor	Product	Versions
Automationdirect	P3-550e Firmware	1.2.10.9
Automationdirect	P3-550e Firmware	4.1.1.10
Automationdirect	P3-550 Firmware	1.2.10.9
Automationdirect	P3-550 Firmware	4.1.1.10
Automationdirect	P3-530 Firmware	1.2.10.9
Automationdirect	P3-530 Firmware	4.1.1.10
Automationdirect	P2-550 Firmware	1.2.10.10
Automationdirect	P2-550 Firmware	4.1.1.10
Automationdirect	P1-550 Firmware	1.2.10.10
Automationdirect	P1-550 Firmware	4.1.1.10
Automationdirect	P1-540 Firmware	1.2.10.10
Automationdirect	P1-540 Firmware	4.1.1.10

References

https://community.automationdirect.com/s/internal-database-security-advisory/a4GPE0000003yaj2AA/sa00038Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2024-1942Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-1942Exploit, Third Party Advisory
https://community.automationdirect.com/s/internal-database-security-advisory/a4GPE0000003yaj2AA/sa00038Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2024-1942Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-1942Exploit, Third Party Advisory

Timeline

Published: May 28, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-21785?

How severe is CVE-2024-21785?

CVE-2024-21785 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21785?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-21785?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST