What’s Vulnerable › Vulnerabilities

CVE-2021-30167: MERIT LILIN ENT.CO.,LTD. P2/Z2/P3/Z3 IP camera - Broken Authentication

• Severity: critical (CVSS 9.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-28 · updated 2026-06-17
• Weakness: CWE-522

Description

The manage users profile services of the network camera device allows an authenticated. Remote attackers can modify URL parameters and further amend user’s information and escalate privileges to control the devices.

Affected products

• Meritlilin P2G1022 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2G1022X Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2G1052 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R3022Ae2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R3052Ae2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6322Ae2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6322Ae4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6352Ae2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6352Ae4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6522E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6522E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6552E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6552E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6822E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6822E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6852E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R6852E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R8822E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R8822E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R8852E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P2R8852E4 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P3R6322E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P3R6522E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin P3R8822E2 Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6422Ax-P Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6422Ax Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6452Ax-P Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6452Ax Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6522X Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908
• Meritlilin Z2R6552X Firmware: before 7.1.94.8908 — fixed in 7.1.94.8908

How to fix

Upgrade to a fixed version: Meritlilin P2G1022 Firmware 7.1.94.8908; Meritlilin P2G1022X Firmware 7.1.94.8908; Meritlilin P2G1052 Firmware 7.1.94.8908; Meritlilin P2R3022Ae2 Firmware 7.1.94.8908; Meritlilin P2R3052Ae2 Firmware 7.1.94.8908; Meritlilin P2R6322Ae2 Firmware 7.1.94.8908; Meritlilin P2R6322Ae4 Firmware 7.1.94.8908; Meritlilin P2R6352Ae2 Firmware 7.1.94.8908; Meritlilin P2R6352Ae4 Firmware 7.1.94.8908; Meritlilin P2R6522E2 Firmware 7.1.94.8908; Meritlilin P2R6522E4 Firmware 7.1.94.8908; Meritlilin P2R6552E2 Firmware 7.1.94.8908. Check the vendor advisory for mitigations.

References

• https://gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e
• https://www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388
• https://www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf
• https://www.twcert.org.tw/tw/cp-132-4676-391a5-1.html
• https://gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e
• https://www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388
• https://www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf
• https://www.twcert.org.tw/tw/cp-132-4676-391a5-1.html

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