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CVE-2026-3559

28
FAUCET Score

CVE-2026-3559 is an authentication bypass vulnerability affecting Philips Hue Bridge devices, specifically within the HomeKit Accessory Protocol service due to a static nonce in its SRP authentication mechanism. Rated 8.1 High, this flaw allows network-adjacent attackers to bypass authentication without requiring any prior authentication or user interaction, leading to high impact on confidentiality and integrity. Although no public exploit code is available and it is not currently listed in CISA's KEV catalog, the vulnerability is on the Hot List and has generated some community discussion, indicating active monitoring.

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
32.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 29th percentile among its peer group of 1,859 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-26-157
Third Party Advisory