How severe is CVE-2025-27853?

CVE-2025-27853 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-27853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27853?

CVE-2025-27853 primarily affects Garmin Empirbus Wireless Display Unit Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-27853?

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

Does CVE-2025-27853 have an EU (EUVD) identifier?

Yes. CVE-2025-27853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209831.

When was CVE-2025-27853 published?

CVE-2025-27853 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2025-27853

CVE-2025-27853 is a high-severity vulnerability in Garmin Empirbus Wireless Display Unit Firmware with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209831
Weakness: CWE-306
Affected product: Garmin Empirbus Wireless Display Unit Firmware
Published: 2026-05-13
Last modified: 2026-06-17

Description

The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows its authentication to be bypassed. The WDU web site only performs authentication with the client within the client's browser. The WebSockets used to communicate with the WDU server do not enforce any authentication. An attacker may bypass all authentication mechanisms by directly utilizing the remote APIs available on the websocket.

Frequently asked questions

What is CVE-2025-27853?: The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows its authentication to be bypassed. The WDU web site only performs authentication with the client within the client's browser. The WebSockets used to communicate with the WDU server do not enforce any authentication. An attacker may bypass all authentication mechanisms by directly utilizing the remote APIs available on the websocket.
How severe is CVE-2025-27853?: CVE-2025-27853 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-27853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27853?: CVE-2025-27853 primarily affects Garmin Empirbus Wireless Display Unit Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-27853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-27853 have an EU (EUVD) identifier?: Yes. CVE-2025-27853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209831.
When was CVE-2025-27853 published?: CVE-2025-27853 was published on 2026-05-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:1.4.6:*:*:*:*:*:*:*
cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:5.00:*:*:*:*:*:*:*

More vulnerabilities in Garmin Empirbus Wireless Display Unit Firmware

CVE-2025-27851 — Critical (CVSS 9.3): The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site origin WebSocket hijacking…
CVE-2025-27850 — High (CVSS 7.5): The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a symlink attack. If a malicious graphics…
CVE-2025-27852 — Medium (CVSS 5.0): The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a reflected cross site scripting (XSS)…

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