How severe is CVE-2024-21785?

CVE-2024-21785 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21785 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21785?

CVE-2024-21785 primarily affects Automationdirect P3-550e Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21785?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-21785 have an EU (EUVD) identifier?

Yes. CVE-2024-21785 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19399.

When was CVE-2024-21785 published?

CVE-2024-21785 was published on 2024-05-28 and last updated on 2026-06-17.

CVE-2024-21785

CVE-2024-21785 is a critical-severity vulnerability in Automationdirect P3-550e Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-489.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19399
Weakness: CWE-489
Affected product: Automationdirect P3-550e Firmware
Published: 2024-05-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-21785?: 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.
How severe is CVE-2024-21785?: CVE-2024-21785 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21785 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21785?: CVE-2024-21785 primarily affects Automationdirect P3-550e Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21785?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-21785 have an EU (EUVD) identifier?: Yes. CVE-2024-21785 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19399.
When was CVE-2024-21785 published?: CVE-2024-21785 was published on 2024-05-28 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:automationdirect:p3-550e_firmware:1.2.10.9:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p3-550e_firmware:4.1.1.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p3-550_firmware:1.2.10.9:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p3-550_firmware:4.1.1.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p3-530_firmware:1.2.10.9:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p3-530_firmware:4.1.1.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p2-550_firmware:1.2.10.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p2-550_firmware:4.1.1.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p1-550_firmware:1.2.10.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p1-550_firmware:4.1.1.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p1-540_firmware:1.2.10.10:*:*:*:*:*:*:*
cpe:2.3:o:automationdirect:p1-540_firmware:4.1.1.10:*:*:*:*:*:*:*

More vulnerabilities in Automationdirect P3-550e Firmware

CVE-2024-24963 — Critical (CVSS 9.8): A stack-based buffer overflow vulnerability exists in the Programming Software Connection FileSelect functionality of…
CVE-2024-24962 — Critical (CVSS 9.8): A stack-based buffer overflow vulnerability exists in the Programming Software Connection FileSelect functionality of…
CVE-2024-23601 — Critical (CVSS 9.8): A code injection vulnerability exists in the scan_lib.bin functionality of AutomationDirect P3-550E 1.2.10.9. A…
CVE-2024-22187 — Critical (CVSS 9.1): A write-what-where vulnerability exists in the Programming Software Connection Remote Memory Diagnostics functionality…
CVE-2024-24959 — High (CVSS 8.2): Several out-of-bounds write vulnerabilities exist in the Programming Software Connection FileSystem API functionality…
CVE-2024-24958 — High (CVSS 8.2): Several out-of-bounds write vulnerabilities exist in the Programming Software Connection FileSystem API functionality…

All CVEs affecting Automationdirect P3-550e Firmware →

Other CWE-489 vulnerabilities

CVE-2023-4804 — Critical (CVSS 10.0): An unauthorized user could access debug features in Quantum HD Unity products that were accidentally exposed.
CVE-2026-49188 — Critical (CVSS 9.8): The ai_cmd utility executes with full root permissions. It pipes socket inputs directly to popen(), paving the way…
CVE-2024-46873 — Critical (CVSS 9.8): Multiple SHARP routers leave the hidden debug function enabled. An arbitrary OS command may be executed with the root…
CVE-2024-32047 — Critical (CVSS 9.8): Hard-coded credentials for the CyberPower PowerPanel test server can be found in the production code. This might…
CVE-2024-28008 — Critical (CVSS 9.8): Active Debug Code in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP,…
CVE-2023-32645 — Critical (CVSS 9.8): A leftover debug code vulnerability exists in the httpd debug credentials functionality of Yifan YF325 v1.0_20221108. A…

Browse all CWE-489 vulnerabilities →