Is CVE-2023-41101 actively exploited?

No active exploitation of CVE-2023-41101 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-41101 be exploited remotely?

Yes. CVE-2023-41101 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-41101?

CVE-2023-41101 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-41101

CWE-787Published: November 17, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. get_query in http_microhttpd.c does not validate the length of the query string of GET requests. This leads to a stack-based buffer overflow in versions 9.x and earlier, and to a heap-based buffer overflow in versions 10.x and later. Attackers may exploit the issue to crash OpenNDS (Denial-of-Service condition) or to inject and execute arbitrary bytecode (Remote Code Execution). Affected OpenNDS before version 10.1.3 fixed in OpenWrt master and OpenWrt 23.05 on 23. November by updating OpenNDS to version 10.2.0.

NVD Source

Technical Analysis

CVE-2023-41101 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-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.