HIGHVulnerability
Verified
Global

CISA KEV: DD-WRT DD-WRT — DD-WRT Stack-Based Buffer Overflow Vulnerability

·Source: CISA KEV

Updated:

Executive Summary

DD-WRT contains a stack-based buffer overflow vulnerability that could allow an unauthenticated attacker to overflow an internal buffer used by UPnP and trigger a code execution vulnerability.

Analysis

DD-WRT contains a stack-based buffer overflow vulnerability that could allow an unauthenticated attacker to overflow an internal buffer used by UPnP and trigger a code execution vulnerability. Added to CISA Known Exploited Vulnerabilities catalog on 2026-07-21. Remediation due: 2026-07-24.

Indicators of Compromise (1)

CVE (1)
CVE-2021-27137
NVDMITRE CVE
Source Attribution

Originally published by CISA KEV on Jul 21, 2026. Verified by: CISA.

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