What is CVE-2021-45677?

CVE-2021-45677 is a medium-severity vulnerability in NETGEAR Gs108t, classified under Cross-site Scripting. CVSS score: 5.2/10. Published 2021-12-26.

How severe is CVE-2021-45677?

Medium severity. CVSS v3 base score is 5.2 out of 10.

XSS in NETGEAR Gs108t

CVE-2021-45677

Certain NETGEAR devices are affected by stored XSS. This affects GS108Tv2 before 5.4.2.36 and GS110TPv2 before 5.4.2.36.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

kb.netgear.com/000064448/Security-Advisory-for-Stored-Cross-Site-Scripting-on-S… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-45677?: CVE-2021-45677 is a medium-severity vulnerability in NETGEAR Gs108t, classified under Cross-site Scripting. CVSS score: 5.2/10. Published 2021-12-26.
How severe is CVE-2021-45677?: Medium severity. CVSS v3 base score is 5.2 out of 10.