synced 4 MIN AGO
01 Record

CVE-2023-33778

Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were

CriticalPUBLISHEDCNA: mitre
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

Draytek Vigor Routers firmware versions below 3.9.6/4.2.4, Access Points firmware versions below v1.4.0, Switches firmware versions below 2.6.7, and Myvigor firmware versions below 2.3.2 were

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.59% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 48.1% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-06-01 00:00Z3 YR AGO
Last updated
2025-01-09 17:24Z1 YR AGO
Reserved
2023-05-22
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-798Use of Hard-coded CredentialsBase
Data version
5.1
Document digest
855a8c95c44505a87f88be2fa97a2f39377c1835f60978afcccd5307316dd9af

05 Affected products

VendorProductVersionsPlatforms
draytekmyvigorNot specified—
draytekvigor1000bNot specified—
draytekvigor1000b_firmwareNot specified—
draytekvigor130Not specified—
draytekvigor130_firmwareNot specified—
draytekvigor165Not specified—
draytekvigor165_firmwareNot specified—
draytekvigor166Not specified—
draytekvigor166_firmwareNot specified—
draytekvigor167Not specified—
draytekvigor167_firmwareNot specified—
draytekvigor2135acNot specified—
draytekvigor2135ac_firmwareNot specified—
draytekvigor2135axNot specified—
draytekvigor2135ax_firmwareNot specified—
draytekvigor2135fvacNot specified—
draytekvigor2135fvac_firmwareNot specified—
draytekvigor2135vacNot specified—
draytekvigor2135vac_firmwareNot specified—
draytekvigor2620lNot specified—
draytekvigor2620l_firmwareNot specified—
draytekvigor2620lnNot specified—
draytekvigor2620ln_firmwareNot specified—
draytekvigor2763acNot specified—
draytekvigor2763ac_firmwareNot specified—
draytekvigor2765acNot specified—
draytekvigor2765ac_firmwareNot specified—
draytekvigor2765axNot specified—
draytekvigor2765ax_firmwareNot specified—
draytekvigor2765vacNot specified—
draytekvigor2765vac_firmwareNot specified—
draytekvigor2766acNot specified—
draytekvigor2766ac_firmwareNot specified—
draytekvigor2766axNot specified—
draytekvigor2766ax_firmwareNot specified—
draytekvigor2766vacNot specified—
draytekvigor2766vac_firmwareNot specified—
draytekvigor2832nNot specified—
draytekvigor2832n_firmwareNot specified—
draytekvigor2862acNot specified—
draytekvigor2862ac_firmwareNot specified—
draytekvigor2862bNot specified—
draytekvigor2862b_firmwareNot specified—
draytekvigor2862bnNot specified—
draytekvigor2862bn_firmwareNot specified—
draytekvigor2862lNot specified—
draytekvigor2862l_firmwareNot specified—
draytekvigor2862lacNot specified—
draytekvigor2862lac_firmwareNot specified—
draytekvigor2862lnNot specified—
draytekvigor2862ln_firmwareNot specified—
draytekvigor2862nNot specified—
draytekvigor2862n_firmwareNot specified—
draytekvigor2862vacNot specified—
draytekvigor2862vac_firmwareNot specified—
draytekvigor2865acNot specified—
draytekvigor2865ac_firmwareNot specified—
draytekvigor2865axNot specified—
draytekvigor2865ax_firmwareNot specified—
draytekvigor2865lNot specified—

83 further entries not shown. The complete list is in the raw JSON document.

06 References