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CVE-2021-27137

DD-WRT Stack-Based Buffer Overflow Vulnerability.

DD-WRT · DD-WRT

Exploitabilité (EPSS)
4 %
percentile mondial 90
Sévérité (CVSS)
·
non noté
Ajoutée au KEV
21 juil. 2026
échéance CISA · 24 juil. 2026
Description

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.

Action requise (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Familles de faiblesses
CWE-121 · CWE-121
Signal de priorisation (d’inspiration SSVC)
Examiner
Exploitation
Active (catalogue KEV)
Automatisable
Inconnu
Impact technique
Inconnu

Une orientation, pas une décision : le 4ᵉ facteur SSVC (impact mission/société) dépend du contexte de votre organisation. Méthode ↗

NVD ↗ CVE.org ↗ CISA KEV ↗