CWE
787 119
Advisory Published
Updated

CVE-2021-21749: Buffer Overflow

First published: Wed Oct 20 2021(Updated: )

ZTE MF971R product has two stack-based buffer overflow vulnerabilities. An attacker could exploit the vulnerabilities to execute arbitrary code.

Credit: psirt@zte.com.cn

Affected SoftwareAffected VersionHow to fix
Zte Mf971r Firmware=v1.0.0b05
ZTE MF971R
Zte Mf971r Firmware=1v1.0.0b06
Zte Mf971r Firmware=2v1.0.0b03
Zte Mf971r Firmware=s2v1.0.0b03
Zte Mf971r Firmware=sv1.0.0b05

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Frequently Asked Questions

  • What is CVE-2021-21749?

    CVE-2021-21749 is a vulnerability in ZTE MF971R product that allows for stack-based buffer overflow, enabling attackers to execute arbitrary code.

  • How severe is CVE-2021-21749?

    CVE-2021-21749 has a severity rating of 9.8 out of 10, which indicates it is critical.

  • What software is affected by CVE-2021-21749?

    The ZTE MF971R firmware versions v1.0.0b05, 1v1.0.0b06, 2v1.0.0b03, s2v1.0.0b03, and sv1.0.0b05 are affected by CVE-2021-21749.

  • How can CVE-2021-21749 be exploited?

    CVE-2021-21749 can be exploited by exploiting the stack-based buffer overflow vulnerabilities, allowing an attacker to execute arbitrary code.

  • Is ZTE MF971R vulnerable to CVE-2021-21749?

    No, the ZTE MF971R device itself is not vulnerable to CVE-2021-21749, but specific firmware versions are.

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