CVE-2025-50401: Classic Buffer Overflow
Source CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
- Immediately isolate Mercury D196G devices from untrusted networks, especially the internet, to reduce exposure.
- Disable remote management interfaces or restrict access to trusted IP addresses only.
- Implement strict network segmentation to limit lateral movement if a device is compromised.
- Monitor network traffic and device logs for anomalous behavior indicative of exploitation attempts, such as unexpected reboots or unusual command execution.
- Engage with Mercury device vendors or suppliers to obtain firmware updates or patches as soon as they become available.
- Consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures targeting buffer overflow attempts on these devices.
- Conduct regular vulnerability assessments and penetration tests focusing on network infrastructure devices.
- Develop and rehearse incident response plans specific to network device compromise scenarios.
- Maintain an inventory of all Mercury devices within the organization to ensure comprehensive coverage of mitigation efforts.
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 password.