HIGHCVSS 8.1Actively exploited · CISA KEV since 2026-07-21Vulnerability
CVE-2021-27137
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.
Properties
- Euvd product
- DD-WRT
- Vulnerability name
- DD-WRT Stack-Based Buffer Overflow Vulnerability
- First seen
- 2026-07-22T03:55:45+00:00
- Cvss score
- 8.1
- Epss score
- 0.03995
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2026-07-24
- Euvd assigner
- mitre
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2026-07-21T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2026-07-21
- Score
- 8.1
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- DD-WRT, embeDD GmbH
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 8.1
Related Entities (5)
AFFECTS_PRODUCT (1)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
MENTIONED_IN (1)
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