Buffer overflow in Draytek Vigor1000b
CVE-2022-32548
An issue was discovered on certain DrayTek Vigor routers before July 2022 such as the Vigor3910 before 4.3.1.1. /cgi-bin/wlogin.cgi has a buffer overflow via the username or password to the aa or ab field.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.340 (98.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.338 · newest: 0.340 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityweek.com/smbs-exposed-attacks-critical-vulnerability-draytek-vigor-… (Exploit, Third Party Advisory)
- www.trellix.com/en-us/about/newsroom/stories/threat-labs/rce-in-dratyek-routers… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-32548?
- CVE-2022-32548 is a critical-severity vulnerability in Draytek Vigor1000b, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 10.0/10. Published 2022-08-29.
- How severe is CVE-2022-32548?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2022-32548 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.