How severe is CVE-2026-3562?

CVE-2026-3562 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3562 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-2026-3562?

CVE-2026-3562 affects Philips Hue Bridge V2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3562?

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-2026-3562 have an EU (EUVD) identifier?

Yes. CVE-2026-3562 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12164.

When was CVE-2026-3562 published?

CVE-2026-3562 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2026-3562

CVE-2026-3562 is a high-severity vulnerability in Philips Hue Bridge V2 Firmware with a CVSS 3.x base score of 8.8. 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-347.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12164
Weakness: CWE-347
Affected product: Philips Hue Bridge V2 Firmware
Published: 2026-03-16
Last modified: 2026-06-17

Description

Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ed25519_sign_open function. The issue results from improper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28480.

Frequently asked questions

What is CVE-2026-3562?: Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ed25519_sign_open function. The issue results from improper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28480.
How severe is CVE-2026-3562?: CVE-2026-3562 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3562 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-2026-3562?: CVE-2026-3562 affects Philips Hue Bridge V2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3562?: 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-2026-3562 have an EU (EUVD) identifier?: Yes. CVE-2026-3562 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12164.
When was CVE-2026-3562 published?: CVE-2026-3562 was published on 2026-03-16 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-26-160/

Affected products (1)

cpe:2.3:o:philips:hue_bridge_v2_firmware:*:*:*:*:*:*:*:*

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CVE-2026-3561 — High (CVSS 8.0): Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability. This…
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