Is CVE-2023-31247 actively exploited?

No active exploitation of CVE-2023-31247 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-31247 be exploited remotely?

Yes. CVE-2023-31247 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-31247?

CVE-2023-31247 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-31247

CWE-119Published: November 14, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.

NVD Source

Risk Analysis

Weston Embedded uC-HTTP contains a memory corruption vulnerability in its Host header parsing, which can be triggered by a malicious network packet to achieve code execution. This is a critical, remotely exploitable flaw with a CVSS score of 9.8.

No public exploit is known, and the vulnerability is not in the KEV database.

Recommended Action

Update the affected software components, including the Gecko SDK or uC-HTTP, to the latest versions.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-31247 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.