High

Stack-based Buffer Overflow in Silex SD-330AC and AMC Manager Redirect URL Processing

IdentifiersCVE-2026-32955CWE-121· Stack-based Buffer Overflow

CVE-2026-32955 is a stack-based buffer overflow vulnerability in the processing of redirect URLs in Silex Technology SD-330AC and AMC Manager. The flaw affects SD-330AC firmware version 1.42 and earlier and AMC Manager version 5.0.2 and earlier. According to the provided advisory content, improper handling of redirect URL input can overflow a stack buffer, resulting in memory corruption and enabling arbitrary code execution on the affected device.

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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 may allow arbitrary code execution on the affected device. The provided CVSS v3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) indicates high impact to confidentiality, integrity, and availability. An attacker who exploits the flaw could fully compromise the device context, including altering device behavior, accessing sensitive information processed by the device, and disrupting availability.

Mitigation

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

Where immediate patching is not possible, the advisory recommends disabling the HTTP/HTTPS service as a workaround for CVE-2026-32955. Additional defensive measures supported by the broader context include avoiding direct internet exposure of affected devices and segmenting networks to reduce reachable attack surface.

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 in the advisory content.

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

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

10 SOURCESView more in app

the hacker newsNews

Apr 21, 2026

22 BRIDGE:BREAK Flaws Expose Thousands of Lantronix and Silex Serial-to-IP Converters

A remote code execution vulnerability affecting the discussed serial-to-IP converter products.

cvefeed high severityNews

Apr 20, 2026

CVE-2026-32955 - Silex Technology, Inc. SD-330AC and AMC Manager Stack-Based Buffer Overflow Vulnerability

A stack-based buffer overflow vulnerability in SD-330AC and AMC Manager from silex technology, Inc. when processing redirect URLs, which may allow arbitrary code execution on the device.

jvn japanNews

Apr 20, 2026

JVNVU#94271449: Multiple vulnerabilities in silex technology SD-330AC and AMC Manager

A stack-based buffer overflow vulnerability in processing redirect URLs affecting silex technology SD-330AC and AMC Manager.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

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 activity6