How severe is CVE-2020-6872?

CVE-2020-6872 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-6872 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6872?

CVE-2020-6872 primarily affects Zte R8500g4 Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-6872?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-6872 published?

CVE-2020-6872 was published on 2020-07-20 and last updated on 2026-06-17.

CVE-2020-6872

CVE-2020-6872 is a medium-severity vulnerability in Zte R8500g4 Firmware with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zte R8500g4 Firmware
Published: 2020-07-20
Last modified: 2026-06-17

Description

The server management software module of ZTE has a storage XSS vulnerability. The attacker inserts some attack codes through the foreground login page, which will cause the user to execute the predefined malicious script in the browser. This affects <R5300G4V03.08.0100/V03.07.0300/V03.07.0200/V03.07.0108/V03.07.0100/V03.05.0047/V03.05.0046/V03.05.0045/V03.05.0044/V03.05.0043/V03.05.0040/V03.04.0020;R8500G4V03.07.0103/V03.07.0101/V03.06.0100/V03.05.0400/V03.05.0020;R5500G4V03.08.0100/V03.07.0200/V03.07.0100/V03.06.0100>.

Frequently asked questions

What is CVE-2020-6872?: The server management software module of ZTE has a storage XSS vulnerability. The attacker inserts some attack codes through the foreground login page, which will cause the user to execute the predefined malicious script in the browser. This affects <R5300G4V03.08.0100/V03.07.0300/V03.07.0200/V03.07.0108/V03.07.0100/V03.05.0047/V03.05.0046/V03.05.0045/V03.05.0044/V03.05.0043/V03.05.0040/V03.04.0020;R8500G4V03.07.0103/V03.07.0101/V03.06.0100/V03.05.0400/V03.05.0020;R5500G4V03.08.0100/V03.07.0200/V03.07.0100/V03.06.0100>.
How severe is CVE-2020-6872?: CVE-2020-6872 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-6872 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6872?: CVE-2020-6872 primarily affects Zte R8500g4 Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-6872?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-6872 published?: CVE-2020-6872 was published on 2020-07-20 and last updated on 2026-06-17.

References

http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1013203

Affected products (21)

cpe:2.3:o:zte:r8500g4_firmware:03.05.0020:*:*:*:*:*:*:*
cpe:2.3:o:zte:r8500g4_firmware:03.05.0400:*:*:*:*:*:*:*
cpe:2.3:o:zte:r8500g4_firmware:03.06.0100:*:*:*:*:*:*:*
cpe:2.3:o:zte:r8500g4_firmware:03.07.0101:*:*:*:*:*:*:*
cpe:2.3:o:zte:r8500g4_firmware:03.07.0103:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5500g4_firmware:03.06.0100:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5500g4_firmware:03.07.0100:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5500g4_firmware:03.07.0200:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5500g4_firmware:03.08.0100:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.04.0020:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0040:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0043:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0044:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0045:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0046:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.05.0047:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.07.0100:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.07.0108:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.07.0200:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.07.0300:*:*:*:*:*:*:*
cpe:2.3:o:zte:r5300g4_firmware:03.08.0100:*:*:*:*:*:*:*

More vulnerabilities in Zte R8500g4 Firmware

CVE-2020-6871 — Critical (CVSS 9.8): The server management software module of ZTE has an authentication issue vulnerability, which allows users to skip the…

All CVEs affecting Zte R8500g4 Firmware →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2026-106102 — Critical (CVSS 10.0): Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.22.0, the SSR-only…
CVE-2026-59167 — Critical (CVSS 10.0): SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11,…
CVE-2026-85061 — Critical (CVSS 10.0): MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in…
CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →