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CVE-2020-6872

17
FAUCET Score

CVE-2020-6872 describes a stored Cross-Site Scripting (XSS) vulnerability in the server management software module of various ZTE R5300G4, R8500G4, and R5500G4 server models. An attacker can inject malicious code via the foreground login page, leading to the execution of predefined scripts in a user's browser. This vulnerability is rated Medium severity with a CVSS score of 6.1. It has a network attack vector and low attack complexity, requiring user interaction to trigger, and can result in limited confidentiality and integrity impacts. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. The vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
03.05.0020CPE matchmatch criteria
cpe:2.3:o:zte:r8500g4_firmware:03.05.0020:*:*:*:*:*:*:*
03.05.0400CPE matchmatch criteria
cpe:2.3:o:zte:r8500g4_firmware:03.05.0400:*:*:*:*:*:*:*
03.06.0100CPE matchmatch criteria
cpe:2.3:o:zte:r8500g4_firmware:03.06.0100:*:*:*:*:*:*:*
03.07.0101CPE matchmatch criteria
cpe:2.3:o:zte:r8500g4_firmware:03.07.0101:*:*:*:*:*:*:*
03.07.0103CPE matchmatch criteria
cpe:2.3:o:zte:r8500g4_firmware:03.07.0103:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.74%
Probability of exploitation in next 30 days
EPSS Percentile
51.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0074 is in the 57th percentile among its peer group of 26,236 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, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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