CVE-2022-47618
CWE-798Published: January 3, 2023· Updated: Jun 17, 2026
Official Description
Merit LILIN AH55B04 & AH55B08 DVR firm has hard-coded administrator credentials. An unauthenticated remote attacker can use these credentials to log in administrator page, to manipulate system or disrupt service.
Risk Analysis
Merit LILIN AH55B04 and AH55B08 DVR devices contain hard-coded administrator credentials. This allows any unauthenticated remote attacker to gain full administrative access to the device, leading to potential system manipulation or service disruption. The 9.8 CVSS score reflects the critical nature of this authentication bypass.
There is no known public exploit for this issue, and it is not in the CISA KEV catalog. The vulnerability is remotely exploitable.
Contact the vendor for firmware updates that remove hard-coded credentials. Restrict network access to the DVR management interface to trusted internal segments only.
Technical Analysis
CVE-2022-47618 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.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-798)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-47618 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts