What is CVE-2023-33778?

CVE-2023-33778 is a critical-severity vulnerability in Draytek Myvigor, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2023-06-01.

How severe is CVE-2023-33778?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-33778 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Draytek Myvigor

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 discovered to use hardcoded encryption keys which allows attackers to bind any affected device to their own account. Attackers are then able to create WCF and DrayDDNS licenses and synchronize them from the website.

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

Public proof-of-concept exploits

netlas-io/netlas-dorks

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-33778?: CVE-2023-33778 is a critical-severity vulnerability in Draytek Myvigor, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2023-06-01.
How severe is CVE-2023-33778?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-33778 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.