Buffer Overflow Vulnerability in Mercury D196G Router
CVE-2025-50398

9.8CRITICAL

Key Information:

Vendor

Mercury

Status
D196G Router
Vendor
CVE Published:
16 December 2025

What is CVE-2025-50398?

The Mercury D196G router, specifically the version d196gv1-cn-up_2020-01-09_11.21.44, is exposed to a buffer overflow vulnerability due to improper handling of the fac_password parameter in the function sub_404CAEDC. This flaw can allow an attacker to execute arbitrary code, potentially compromising the integrity and confidentiality of the device and the network it operates within.

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References

https://github.com/sezangel/IOT-vul/tree/main/Mercury/D19...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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