CVE-2026-3556: Philips Hue Bridge HomeKit Pair-Setup Heap-based Buffer Overflow Remote Code Execution Vulnerability

Q: How do I fix CVE-2026-3556?

hue bridge v2 firmware: upgrade to 1975170000. Exact commands for each OS are on this page.

Q: Is CVE-2026-3556 being exploited?

CVE-2026-3556 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-3556 affect?

CVE-2026-3556 affects hue bridge v2 firmware. Severity is high (CVSS 8.8). Philips Hue Bridge HomeKit Pair-Setup 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. Authentica

This month

HIGH 8.8UPGRADE

CVE-2026-3556 is a high-severity flaw (CVSS 8.8) affecting hue bridge v2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Philips Hue Bridge HomeKit Pair-Setup 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. Authentication is not required to exploit this vulnerability. The specific flaw exists within the hk_hap_pair_storage_put function. The issue results from the lack of proper validation of the length of user-supplied dat

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-03-16
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: philips

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-16 14:19 UTCPublished CVE record published
2026-06-17 10:43 UTCUpdated Record last modified

philips hue bridge v2 firmware UPGRADE

Affected: < 1975170000

Fixed in: 1975170000

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-3556?

hue bridge v2 firmware: upgrade to 1975170000. Exact commands for each OS are on this page.

Is CVE-2026-3556 being exploited?

CVE-2026-3556 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-3556 affect?

CVE-2026-3556 affects hue bridge v2 firmware. Severity is high (CVSS 8.8). Philips Hue Bridge HomeKit Pair-Setup 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. Authentica

How urgent is CVE-2026-3556?

Priority 44/100. High severity

Related CVEs

CVE-2026-3562 HIGH 8.8 UPGRADE Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability
CVE-2026-3561 HIGH 8.0 UPGRADE Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2026-3560 HIGH 8.8 UPGRADE Philips Hue Bridge HomeKit hk_hap_pair_storage_put Heap-based Buffer Overflow Remote Code Execution Vulnerabil
CVE-2026-3559 HIGH 8.1 UPGRADE Philips Hue Bridge HomeKit Accessory Protocol Static Nonce Authentication Bypass Vulnerability
CVE-2026-3558 HIGH 8.1 UPGRADE Philips Hue Bridge HomeKit Accessory Protocol Transient Pairing Mode Authentication Bypass Vulnerability

References

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