CVE-2021-20709

Name of the Vulnerable Software and Affected Versions: NEC Aterm WF1200CR versions 1.3.2 and earlier NEC Aterm WG1200CR versions 1.3.3 and earlier NEC Aterm WG2600HS versions 1.5.1 and earlier

Description: The issue is related to improper validation of an integrity check value, allowing an attacker with administrative privileges to execute arbitrary OS commands. This can be achieved by sending a specially crafted request to a specific URL.

Recommendations: For NEC Aterm WF1200CR versions 1.3.2 and earlier, update to a version later than 1.3.2 to resolve the issue. For NEC Aterm WG1200CR versions 1.3.3 and earlier, update to a version later than 1.3.3 to resolve the issue. For NEC Aterm WG2600HS versions 1.5.1 and earlier, update to a version later than 1.5.1 to resolve the issue. As a temporary workaround, consider restricting access to the specific URL that can be exploited to execute arbitrary OS commands.