Vulnerability in Dlink Dir-3040
CVE-2021-21820
A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to code execution. An attacker can send a sequence of requests to trigger this vulnerability.
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: 0.030 (86.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
- Dlink Dir-3040
- Dlink Dir-3040 Firmware — versions 1.13b03
- D-Link — versions D-LINK DIR-3040 1.13B03
Weakness classification (CWE)
Public proof-of-concept exploits
References
- talosintelligence.com/vulnerability_reports/TALOS-2021-1285 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21820?
- CVE-2021-21820 is a critical-severity vulnerability in Dlink Dir-3040, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2021-07-16.
- How severe is CVE-2021-21820?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-21820 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.