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CVE-2025-12553

31
FAUCET Score

CVE-2025-12553 is a critical vulnerability affecting BLU-IC2 and BLU-IC4 devices up to version 1.19.5, where email server certificate verification is disabled, allowing for Man-in-the-Middle (MITM) attacks. With a CVSS score of 9.8, this network-exploitable flaw requires no user interaction and can lead to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or publicly available exploit code, the vulnerability has garnered community discussion, indicating awareness of its severe implications. Organizations should restrict usage, monitor traffic, and await vendor updates as no patch is currently available.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.20CPE matchmatch criteria
cpe:2.3:o:azure-access:blu-ic2_firmware:*:*:*:*:*:*:*:*
< 1.20CPE matchmatch criteria
cpe:2.3:o:azure-access:blu-ic4_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

10.0CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
10.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 0th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

azure-access.com / security-advisories
Vendor Advisory