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CVE-2026-3558

28
FAUCET Score

CVE-2026-3558 is an authentication bypass vulnerability affecting the HomeKit Accessory Protocol service on Philips Hue Bridges, allowing network-adjacent attackers to gain unauthorized access without requiring authentication. Rated High with a CVSS score of 8.1, this flaw has low attack complexity and can lead to high impact on confidentiality and integrity, as attackers can bypass security controls. While it is not currently listed in CISA's Known Exploited Vulnerabilities catalog and no public exploit code is available, it is on a "Hot List" and has garnered limited community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1975170000CPE matchmatch criteria
cpe:2.3:o:philips:hue_bridge_v2_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 30th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

zerodayinitiative.com / advisories/ZDI-26-156
Third Party Advisory