CVE-2025-12422· NVD / CVE Program· CNA azure-access

Vulnerable Upgrade Feature (Arbitrary File Write)

Noroxi assessment

Priority: Plan (action score 40/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.48% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Vulnerable Upgrade Feature (Arbitrary File Write) may lead to obtaining super user permissions on board.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

CriticalCVSS 10.0 · v4.0—No exploit No fix recorded

Published: Oct 28, 2025
Updated: Oct 18, 2026
EPSS: 0.4% · 40th percentile
CWE: CWE-22

Report tools

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 40 / 40 · 10.0 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.4%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · azure-access: 10.0; NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
azure-access	blu-ic2 firmware	cpe:2.3:o:azure-access:blu-ic2_firmware
azure-access	blu-ic2	cpe:2.3:h:azure-access:blu-ic2
azure-access	blu-ic4 firmware	cpe:2.3:o:azure-access:blu-ic4_firmware
azure-access	blu-ic4	cpe:2.3:h:azure-access:blu-ic4

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

azure-access blu-ic2 firmwarebefore 1.20
azure-access blu-ic4 firmwarebefore 1.20

Versions reported by the vendor

Affected version ranges reported by the assigning authority (azure-access). Independent of NVD's CPE analysis and usually ahead of it.

Azure Access Technology BLU-IC2
- up to and including 1.19.5affected · semver
Azure Access Technology BLU-IC4
- up to and including 1.19.5affected · semver

Same product

azure-access: all records

Other highest-scoring records for the same primary product.

CVE-2025-12601Denial of Service Due to SlowLoris
40Plan
CVE-2025-12600Web UI Malfunction when setting unexpected locale via API.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
40Plan
CVE-2025-12599Multiple Devices are Sharing the Same Secrets for SDKSocket (TCP/5000)
40Plan

Published before and after this one in the same product

← EarlierCVE-2025-12364Oct 27, 2025 · Weak Password Policy
40Plan
← EarlierCVE-2025-12365Oct 27, 2025 · Error Messages Wrapped In HTTP Header
27Monitor
Later →CVE-2025-12423Oct 28, 2025 · Denial of Service - Protocol Manipulation
40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Benjamin Lafoisfinder
Alexi Bitsiosfinder
Dominik Schneiderfinder
Sebastian ToscanoAmazon Securityfinder
Kevin SchallerAmazon Securityfinder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-secondary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

azure-access.com/security-advisories

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records