Buffer Overflow Vulnerability in Zyxel NR7101 Firmware
CVE-2022-43391

6.5MEDIUM

Key Information:

Vendor
Zyxel
Status
Nr7101 Firmware
Vendor
CVE Published:
11 January 2023

Summary

A buffer overflow vulnerability exists in the CGI program parameter of the Zyxel NR7101 firmware, allowing authenticated attackers to exploit this weakness. By sending a specially crafted HTTP request, an attacker can trigger conditions that may lead to a denial-of-service (DoS) scenario, disrupting normal operation of the device. Users of vulnerable Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0 are advised to upgrade to the latest version to mitigate this risk.

Affected Version(s)

NR7101 firmware < V1.15(ACCC.3)C0

References

https://www.zyxel.com/global/en/support/security-advisori...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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