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

What is CVE-2022-43391?

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.

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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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