Adjacent-network code execution via unchecked characteristics copy
Published Mar 13, 2026 · Updated Mar 13, 2026
Heap-based buffer overflow in Signify Philips Hue Bridge 1.73.1973146020 allows remote attackers to execute code via a crafted PUT request. The hk_hap characteristics handler copies user-supplied data into a heap buffer without validating its length. Access to the Bridge's adjacent network is required; authentication normally gates the endpoint, but the published advisory states that the mechanism can be bypassed, yielding code execution in the device context.
Summary
What happened
Heap-based buffer overflow in Signify Philips Hue Bridge 1.73.1973146020 allows remote attackers to execute code via a crafted PUT request. The hk_hap characteristics handler copies user-supplied data into a heap buffer without validating its length. Access to the Bridge's adjacent network is required; authentication normally gates the endpoint, but the published advisory states that the mechanism can be bypassed, yielding code execution in the device context.
The record
- CVE
- CVE-2026-3561
- Published
- Mar 13, 2026
- Updated
- Mar 13, 2026
- Vendor
- Signify
- Product
- Philips Hue Bridge
- Classifications
- CWE-122
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 13, 2026CVE publishedPublication date reported by the CVE source.
- Mar 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.73.1973146020
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What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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