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CVE-2019-3409

28
FAUCET Score

CVE-2019-3409 is a critical command injection vulnerability affecting all versions up to UKBB_WF820+_1.0.0B06 of the ZTE WF820+ LTE Outdoor CPE product. This flaw stems from inadequate parameter verification, allowing unauthorized users to execute arbitrary commands and gain full control over the device. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low privileges and no user interaction, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed on CISA's KEV catalog, indicating no known active exploitation. Community discussion and media coverage for this CVE are also minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.0b06CPE matchmatch criteria
cpe:2.3:o:zte:wf820\+_lte_outdoor_cpe_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.90%
Probability of exploitation in next 30 days
EPSS Percentile
77.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0190 is in the 76th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.zte.com.cn / support/news/LoopholeInfoDetail.aspx
Vendor Advisory