Is CVE-2026-3557 actively exploited?

CVE-2026-3557 has no public evidence of in-the-wild exploitation as of 2026-04-27.

What is the CVSS score for CVE-2026-3557?

CVE-2026-3557 has a CVSS score of 8 (HIGH severity). Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-3557?

Patch guidance is available from philips security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-3557.

Which products are affected by CVE-2026-3557?

1 product: philips hue bridge v2 firmware.

Fix CVE-2026-3557 - HIGH philips hue bridge v2 firmware

Description

Philips Hue Bridge hap_pair_verify_handler Sub-TLV Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the hap_pair_verify_handler function of the hk_hap service, which listens on TCP port 8080 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28337.

CVSS Metrics

Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: adjacent network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-122

Metadata

Primary Vendor: PHILIPS
Published: 3/16/2026
Last Modified: 4/27/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

philips : hue_bridge_v2_firmware

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-3557. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-3557

View on NIST NVD

CVE-2026-3557 vulnerability