Vulnerability in Dell EMC Networker
CVE-2021-21559
Dell EMC NetWorker, versions 18.x, 19.1.x, 19.2.x 19.3.x, 19.4, and 19.4.0.1 contain an Improper Certificate Validation vulnerability in the client (NetWorker Management Console) components which uses SSL encrypted connection in order to communicate with the application server. An unauthenticated attacker in the same network collision domain as the NetWorker Management Console client could potentially exploit this vulnerability to perform man-in-the-middle attacks to intercept and tamper the traffic between the client and the application server.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (5.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Dell EMC Networker
- Dell Networker — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dell.com/support/kbdoc/en-us/000186638/dsa-2021-104-dell-emc-networker-secu… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-21559?
- CVE-2021-21559 is a high-severity vulnerability in Dell EMC Networker, classified under Improper Certificate Validation. CVSS score: 7.1/10. Published 2021-06-08.
- How severe is CVE-2021-21559?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2021-21559 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.