How severe is CVE-2023-54327?

CVE-2023-54327 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-2023-54327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-54327?

CVE-2023-54327 affects Tinycontrol Lan Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-54327?

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-2023-54327 have an EU (EUVD) identifier?

Yes. CVE-2023-54327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60532.

When was CVE-2023-54327 published?

CVE-2023-54327 was published on 2025-12-30 and last updated on 2026-06-17.

CVE-2023-54327

CVE-2023-54327 is a critical-severity vulnerability in Tinycontrol Lan Controller 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-60532
Weakness: CWE-862
Affected product: Tinycontrol Lan Controller Firmware
Published: 2025-12-30
Last modified: 2026-06-17

Description

Tinycontrol LAN Controller 1.58a contains an authentication bypass vulnerability that allows unauthenticated attackers to change admin passwords through a crafted API request. Attackers can exploit the /stm.cgi endpoint with a specially crafted authentication parameter to disable access controls and modify administrative credentials.

Frequently asked questions

What is CVE-2023-54327?: Tinycontrol LAN Controller 1.58a contains an authentication bypass vulnerability that allows unauthenticated attackers to change admin passwords through a crafted API request. Attackers can exploit the /stm.cgi endpoint with a specially crafted authentication parameter to disable access controls and modify administrative credentials.
How severe is CVE-2023-54327?: CVE-2023-54327 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-2023-54327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-54327?: CVE-2023-54327 affects Tinycontrol Lan Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-54327?: 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-2023-54327 have an EU (EUVD) identifier?: Yes. CVE-2023-54327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60532.
When was CVE-2023-54327 published?: CVE-2023-54327 was published on 2025-12-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tinycontrol:lan_controller_firmware:*:*:*:*:*:*:*:*

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