CVE-2022-47618 | Merit Lilin Ent. Co., Ltd. AH55B04 & AH55B08 DVR - Hard-coded Credentials

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.

Published: 2023-01-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2022-47618 is rated Moderate Risk (58.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.02%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-47618

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.09% 1.02% -1.07%
2 2026-01-13 2.54% 2.09% -0.45%
3 2026-01-12 2.54%

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-47618

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.9 [email protected]

Weakness enumeration for CVE-2022-47618

Affected software / configurations for CVE-2022-47618

Vendor Product Version Raw CPE
meritlilin ah55b08_firmware cpe:2.3:o:meritlilin:ah55b08_firmware:-:*:*:*:*:*:*:*
meritlilin ah55b04_firmware cpe:2.3:o:meritlilin:ah55b04_firmware:-:*:*:*:*:*:*:*

References for CVE-2022-47618

URL Tags
https://www.twcert.org.tw/tw/cp-132-6825-6691e-1.html Third Party Advisory VDB Entry
cvelogic Threat Intelligence