How severe is CVE-2025-12221?

CVE-2025-12221 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-12221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-12221?

CVE-2025-12221 primarily affects Azure-access Blu-ic2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-12221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-12221 have an EU (EUVD) identifier?

Yes. CVE-2025-12221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35937.

When was CVE-2025-12221 published?

CVE-2025-12221 was published on 2025-10-25 and last updated on 2026-06-17.

CVE-2025-12221

CVE-2025-12221 is a high-severity vulnerability in Azure-access Blu-ic2 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 2.1
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35937
Weakness: CWE-352
Affected product: Azure-access Blu-ic2 Firmware
Published: 2025-10-25
Last modified: 2026-06-17

Description

Busybox 1.31.1 - Multiple Known Vulnerabilities.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

Frequently asked questions

What is CVE-2025-12221?: Busybox 1.31.1 - Multiple Known Vulnerabilities.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
How severe is CVE-2025-12221?: CVE-2025-12221 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-12221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-12221?: CVE-2025-12221 primarily affects Azure-access Blu-ic2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-12221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-12221 have an EU (EUVD) identifier?: Yes. CVE-2025-12221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35937.
When was CVE-2025-12221 published?: CVE-2025-12221 was published on 2025-10-25 and last updated on 2026-06-17.

References

https://azure-access.com/security-advisories

Affected products (2)

cpe:2.3:o:azure-access:blu-ic2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:azure-access:blu-ic4_firmware:*:*:*:*:*:*:*:*

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