SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-21738

ZTE's big video business platform has two reflective cross-site scripting (XSS) vulnerabilities.

MEDIUM 6.1EPSS 0.58%

Does this matter?

Lower severity and a low EPSS score (0.58%). Track it; it rarely justifies an emergency change on its own.

Description

ZTE's big video business platform has two reflective cross-site scripting (XSS) vulnerabilities. Due to insufficient input verification, the attacker could implement XSS attacks by tampering with the parameters, to affect the operations of valid users. This affects: <ZXIPTV><ZXIPTV-EAS_PV5.06.04.09>

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.58% probability · 47th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
zte/zxiptv firmware
Source
psirt@zte.com.cn
EPSS trend
0%3%5%26 October 2026: 0.58%26 October 202626 October 2026

EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.