Is CVE-2018-8878 actively exploited?

No active exploitation of CVE-2018-8878 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-8878 be exploited remotely?

Yes. CVE-2018-8878 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-8878?

CVE-2018-8878 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2018-8878

CWE-200Published: February 27, 2020· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official Description

Information disclosure in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to acquire information on internal network devices' hostnames and MAC addresses by reading the custom_id variable on the blocking.asp page.

NVD Source

Technical Analysis

CVE-2018-8878 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.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.