Buffer overflow in Dlink Dir-809
CVE-2021-33269
D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_8004776c in /formVirtualServ. This vulnerability is triggered via a crafted POST request.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.040 (90.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.040 · change: +0.001
Affected products
Weakness classification (CWE)
References
- www.dlink.com/en/security-bulletin/ (Vendor Advisory)
- github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln01 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33269?
- CVE-2021-33269 is a critical-severity vulnerability in Dlink Dir-809, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-12-01.
- How severe is CVE-2021-33269?
- Critical severity. CVSS v3 base score is 9.8 out of 10.