What is CVE-2020-35740?

CVE-2020-35740 is a high-severity vulnerability in Hgiga Mailsherlock Msr45/ssr45, classified under Cross-site Scripting. CVSS score: 7.0/10. Published 2020-12-31.

How severe is CVE-2020-35740?

High severity. CVSS v3 base score is 7.0 out of 10.

XSS in Hgiga Mailsherlock Msr45/ssr45

CVE-2020-35740

HGiga MailSherlock does not validate specific URL parameters properly that allows attackers to inject JavaScript syntax for XSS attacks.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (47.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% 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

Hgiga Mailsherlock Msr45/ssr45 — versions unspecified
Hgiga Msr45 Isherlock-Antispam
Hgiga Msr45 Isherlock-User
Hgiga Ssr45 Isherlock-Antispam
Hgiga Ssr45 Isherlock-User

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.twcert.org.tw/tw/cp-132-4259-90f23-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-35740?: CVE-2020-35740 is a high-severity vulnerability in Hgiga Mailsherlock Msr45/ssr45, classified under Cross-site Scripting. CVSS score: 7.0/10. Published 2020-12-31.
How severe is CVE-2020-35740?: High severity. CVSS v3 base score is 7.0 out of 10.