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Vulnerability record · CVE-2025-50398 · published 16 December 2025

CVE-2025-50398: Mercurycom d196g firmware classic buffer overflow vulnerability

Mercurycom · D196g Firmware

Mercury D196G d196gv1-cn-up_2020-01-09_11.21.44 is vulnerable to Buffer Overflow in the function sub_404CAEDC via the parameter fac_password.

9.8 CVSS 3.1 Critical EPSS 0.42% · top 66.0% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Mercury D196G d196gv1-cn-up_2020-01-09_11.21.44 is vulnerable to Buffer Overflow in the function sub_404CAEDC via the parameter fac_password.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/sezangel/IOT-vul/tree/main/Mercury/D196G/2 ExploitThird Party Advisory
https://github.com/sezangel/IOT-vul/tree/main/Mercury/D196G/2 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-50398), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.