CVE-2025-12553
CWE-599Published: October 31, 2025· Updated: Jun 17, 2026
Official Description
Email Server Certificate Verification Disabled.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
Risk Analysis
This critical vulnerability in BLU-IC2 and BLU-IC4 devices stems from disabled email server certificate verification. With a CVSS score of 9.8, this flaw presents a severe risk, as it allows for man-in-the-middle attacks on email communications, potentially compromising sensitive information. The absence of an EPSS score means the exploitation likelihood is not yet quantifiable, but the critical severity demands immediate attention.
No public exploit is currently known for this vulnerability. The flaw is remotely exploitable due to its network attack vector and low attack complexity.
Administrators of BLU-IC2 and BLU-IC4 devices should apply vendor-provided updates to versions beyond 1.19.5. Ensure email server certificate verification is enabled and properly configured to prevent eavesdropping and tampering.
Technical Analysis
CVE-2025-12553 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-599)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-12553 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts