How severe is CVE-2026-27843?

CVE-2026-27843 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-27843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27843?

CVE-2026-27843 affects Senselive X3500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27843?

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-2026-27843 have an EU (EUVD) identifier?

Yes. CVE-2026-27843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25354.

When was CVE-2026-27843 published?

CVE-2026-27843 was published on 2026-04-24 and last updated on 2026-06-17.

CVE-2026-27843

CVE-2026-27843 is a critical-severity vulnerability in Senselive X3500 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 9.2
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25354
Weakness: CWE-306
Affected product: Senselive X3500 Firmware
Published: 2026-04-24
Last modified: 2026-06-17

Description

A vulnerability exists in SenseLive X3050's web management interface that allows critical configuration parameters to be modified without sufficient authentication or server-side validation. By applying unsupported or disruptive values to recovery mechanisms and network settings, an attacker can induce a persistent lockout state. Because the device lacks a physical reset button, recovery requires specialized technical access via the console to perform a factory reset, resulting in a total denial-of-service for the gateway and its connected RS-485 downstream systems.

Frequently asked questions

What is CVE-2026-27843?: A vulnerability exists in SenseLive X3050's web management interface that allows critical configuration parameters to be modified without sufficient authentication or server-side validation. By applying unsupported or disruptive values to recovery mechanisms and network settings, an attacker can induce a persistent lockout state. Because the device lacks a physical reset button, recovery requires specialized technical access via the console to perform a factory reset, resulting in a total denial-of-service for the gateway and its connected RS-485 downstream systems.
How severe is CVE-2026-27843?: CVE-2026-27843 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-27843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27843?: CVE-2026-27843 affects Senselive X3500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27843?: 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-2026-27843 have an EU (EUVD) identifier?: Yes. CVE-2026-27843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25354.
When was CVE-2026-27843 published?: CVE-2026-27843 was published on 2026-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:senselive:x3500_firmware:1.523:*:*:*:*:*:*:*

More vulnerabilities in Senselive X3500 Firmware

CVE-2026-40630 — Critical (CVSS 9.8): A vulnerability in SenseLive X3050’s web management interface allows unauthorized access to certain configuration…
CVE-2026-40620 — Critical (CVSS 9.8): A vulnerability in SenseLive X3050’s embedded management service allows full administrative control to be…
CVE-2026-35503 — Critical (CVSS 9.8): A vulnerability in SenseLive X3050’s web management interface allows authentication logic to be performed entirely…
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CVE-2026-27841 — High (CVSS 8.1): A vulnerability in SenseLive X3050's web management interface allows state-changing operations to be triggered…

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