CVE-2023-28391 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-119** (Improper Restriction of Operations within Memory Buffer). The flaw lies in the **header parsing** function of the HTTP Server, causing unsafe memory operations.

Q: Who is affected? (Versions/Components)

🏭 **Affected Vendor**: **Silicon Labs** (via Micrium). 📦 **Product**: **Gecko Platform** / Weston Embedded uC-HTTP. 📅 **Version**: Specifically **v3.01.01** is cited as vulnerable.

Q: What can hackers do? (Privileges/Data)

💀 **Attacker Actions**: Remote attackers can exploit this to execute arbitrary code or crash the system. Due to **CVSS H** rating, they gain full control over **Confidentiality**, **Integrity**, and **Availability**.

Q: Is exploitation threshold high? (Auth/Config)

🔓 **Exploitation Threshold**: **Low**. CVSS Vector shows **AV:N** (Network), **PR:N** (No Privileges), **UI:N** (No User Interaction). No auth or complex config needed to trigger.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🕵️ **Public Exploit**: **No**. The `pocs` field is empty. However, a detailed report exists from **Talos Intelligence** (TALOS-2023-1732), suggesting technical knowledge is available.

Q: How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for **Micrium uC-HTTP** components in embedded devices. Look for **TCP/IP stack** implementations using version **v3.01.01**. Check HTTP header handling routines for buffer bounds.

Q: Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: **Yes**. Published on **2023-11-14**. Silicon Labs/Micrium likely released a patch for the Gecko Platform. Update to the latest secure version immediately.

Q: What if no patch? (Workaround)

🚧 **No Patch Workaround**: Implement strict **input validation** on HTTP headers. Use a **WAF** or network filter to block malformed HTTP requests. Isolate the device from untrusted networks.

Q: Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. CVSS Score is **High** (likely 9.0+). Network-accessible, no auth required. Patch immediately to prevent remote code execution in embedded IoT devices.

Updated May 08, 2026 CVSS 9.0 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: A buffer error in **Weston Embedded uC-HTTP** v3.01.01. 📉 **Consequences**: Memory corruption during HTTP header parsing.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-119** (Improper Restriction of Operations within Memory Buffer). The flaw lies in the **header parsing** function of the HTTP Server, causing unsafe memory operations.

Q3Who is affected? (Versions/Components)

🏭 **Affected Vendor**: **Silicon Labs** (via Micrium). 📦 **Product**: **Gecko Platform** / Weston Embedded uC-HTTP. 📅 **Version**: Specifically **v3.01.01** is cited as vulnerable.

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Actions**: Remote attackers can exploit this to execute arbitrary code or crash the system. Due to **CVSS H** rating, they gain full control over **Confidentiality**, **Integrity**, and **Availability**.

Q5Is exploitation threshold high? (Auth/Config)

🔓 **Exploitation Threshold**: **Low**. CVSS Vector shows **AV:N** (Network), **PR:N** (No Privileges), **UI:N** (No User Interaction). No auth or complex config needed to trigger.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🕵️ **Public Exploit**: **No**. The `pocs` field is empty. However, a detailed report exists from **Talos Intelligence** (TALOS-2023-1732), suggesting technical knowledge is available.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for **Micrium uC-HTTP** components in embedded devices. Look for **TCP/IP stack** implementations using version **v3.01.01**. Check HTTP header handling routines for buffer bounds.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: **Yes**. Published on **2023-11-14**. Silicon Labs/Micrium likely released a patch for the Gecko Platform. Update to the latest secure version immediately.

Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: Implement strict **input validation** on HTTP headers. Use a **WAF** or network filter to block malformed HTTP requests. Isolate the device from untrusted networks.

Q10Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **HIGH**. CVSS Score is **High** (likely 9.0+). Network-accessible, no auth required. Patch immediately to prevent remote code execution in embedded IoT devices.

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Vulnerability detail Full AI analysis (login) Silicon Labs CWE-119