CVE-2025-12553 Server Certificate Verification Disabled
Azure Access BLU-IC devices fail to verify server certificates, allowing attackers to bypass security controls and potentially intercept or manipulate email traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12553?
CVE-2025-12553 is a critical vulnerability in Azure Access Technology BLU-IC2, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Email Server Certificate Verification Disabled.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
Weakness: CWE-599
Which versions are affected by CVE-2025-12553?
It affects 2 products.
Products include Azure-Access Blu-Ic2 Firmware, Azure-Access Blu-Ic4 Firmware.
How do I fix CVE-2025-12553?
No fix has been published for CVE-2025-12553 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12553 being exploited?
There is no known exploitation of CVE-2025-12553 in the wild and no public exploit code.
Other vulnerabilities in Azure Access Technology BLU-IC2
- CVE-2025-12599 Multiple Devices are Sharing the Same Secrets for SDKSocket (TCP/5000)
- CVE-2025-12600 Web UI Malfunction
- CVE-2025-12601 Denial of Service Due to SlowLoris
- CVE-2025-12515 Systemic Internal Server Errors - HTTP 500 Response
- CVE-2025-12516 Lack of Graceful Error Handling - HTTP 5xx Error
Sources
Also known as GHSA-785c-r7jc-9qxg.