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CVE-2020-6879

13
FAUCET Score

CVE-2020-6879 describes an input verification vulnerability in ZTE ZXHN Z500 and F670L devices. An authenticated attacker on the local network can bypass front-end input restrictions by crafting a POST request to the static routing configuration interface, allowing them to tamper with parameter values due to insufficient backend validation. This vulnerability has a CVSS score of 3.5 (LOW), indicating a low-complexity attack with limited impact on integrity, requiring local network access and low privileges. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
v1.0.0.2b1.1000CPE matchmatch criteria
cpe:2.3:o:zte:zxhn_z500_firmware:v1.0.0.2b1.1000:*:*:*:*:*:*:*
v1.1.10p1n2eCPE matchmatch criteria
cpe:2.3:o:zte:zxhn_f670l_firmware:v1.1.10p1n2e:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 86th percentile among its peer group of 85 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 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