How severe is CVE-2023-23551?

CVE-2023-23551 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-23551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23551?

CVE-2023-23551 affects Controlbyweb X-600m Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-23551?

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.

When was CVE-2023-23551 published?

CVE-2023-23551 was published on 2023-02-13 and last updated on 2026-06-17.

CVE-2023-23551

CVE-2023-23551 is a critical-severity vulnerability in Controlbyweb X-600m Firmware with a CVSS 3.x base score of 9.1. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Controlbyweb X-600m Firmware
Published: 2023-02-13
Last modified: 2026-06-17

Description

Control By Web X-600M devices run Lua scripts and are vulnerable to code injection, which could allow an attacker to remotely execute arbitrary code.

Frequently asked questions

What is CVE-2023-23551?: Control By Web X-600M devices run Lua scripts and are vulnerable to code injection, which could allow an attacker to remotely execute arbitrary code.
How severe is CVE-2023-23551?: CVE-2023-23551 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-23551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23551?: CVE-2023-23551 affects Controlbyweb X-600m Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-23551?: 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.
When was CVE-2023-23551 published?: CVE-2023-23551 was published on 2023-02-13 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-23-040-01

Affected products (1)

cpe:2.3:o:controlbyweb:x-600m_firmware:*:*:*:*:*:*:*:*

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