What is CVE-2021-27703?

CVE-2021-27703 is a medium-severity vulnerability in N/a, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-11-12.

How severe is CVE-2021-27703?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in N/a

CVE-2021-27703

Sercomm Model Etisalat Model S3- AC2100 is affected by Cross Site Scripting (XSS) via the firmware update page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-11-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/Mrnmap/mrnmap-cve/blob/main/CVE-2021-27703

Frequently asked questions

What is CVE-2021-27703?: CVE-2021-27703 is a medium-severity vulnerability in N/a, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-11-12.
How severe is CVE-2021-27703?: Medium severity. CVSS v3 base score is 5.4 out of 10.