What is CVE-2020-17891?

CVE-2020-17891 is a medium-severity vulnerability in TP-Link Archer C1200, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-14.

How severe is CVE-2020-17891?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in TP-Link Archer C1200

CVE-2020-17891

TP-Link Archer C1200 firmware version 1.13 Build 2018/01/24 rel.52299 EU has a XSS vulnerability allowing a remote attacker to execute arbitrary code.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

TP-Link Archer C1200
TP-Link Archer C1200 Firmware — versions 1.13

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/sandboxescape/TP-Link-wireless-router-Archer-C1200---Cross-Site-Scri… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-17891?: CVE-2020-17891 is a medium-severity vulnerability in TP-Link Archer C1200, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-14.
How severe is CVE-2020-17891?: Medium severity. CVSS v3 base score is 6.1 out of 10.