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Medium

Unauthenticated Arbitrary File Upload in Silex SD-330AC and AMC Manager Firmware Maintenance

IdentifiersCVE-2026-32957CWE-306· Missing Authentication for…

CVE-2026-32957 is a missing authentication for critical function vulnerability in the firmware maintenance functionality of Silex Technology SD-330AC and AMC Manager. The issue allows an attacker to access the firmware maintenance path without authentication and upload arbitrary files to the device. The affected products are reported as SD-330AC version 1.42 and earlier and AMC Manager version 5.0.2 and earlier.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows unauthenticated arbitrary file upload to the affected device through the firmware maintenance function. This can enable unauthorized modification of device contents and may facilitate firmware tampering, persistence, or further compromise of the device depending on how uploaded files are processed or stored.

Mitigation

If you can’t patch tonight, do this now.

As a workaround, disable the HTTP/HTTPS service where operationally feasible. More broadly, avoid exposing the management interface to untrusted networks and restrict access to device management services until patches can be applied.

Remediation

Patch, then assume compromise.

Update Silex SD-330AC to firmware version 1.50 or later and update AMC Manager to version 5.1.0 or later, as recommended by the vendor/advisory.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Silex TechnologyAmc Managerapplication
Silex TechnologySd-330achardware
SilextechnologyAmc Managerapplication
SilextechnologySd-330ac Firmwareoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

3 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-32957
NVD
nvd.nist.gov/vuln/detail/CVE-2026-32957
MITRE CWE · CWE-306
Missing Authentication for Critical Function
Vendor Advisory
silex.jp/support/security-advisories/2026-001
Vendor Advisory
silex.jp/support/security-advisories/en/2026-001
Third Party Advisory
jvn.jp/en/vu/JVNVU94271449