What’s Vulnerable › Vulnerabilities

CVE-2020-25848: HGiga MailSherlock - Broken Authentication

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-31 · updated 2026-06-17
• Weakness: CWE-287

Description

HGiga MailSherlock contains weak authentication flaw that attackers grant privilege remotely with default password generation mechanism.

Affected products

• HGiga Msr45 Isherlock-Antispam: before 4.5-130 — fixed in 4.5-130
• HGiga Msr45 Isherlock-Audit: before 4.5-143 — fixed in 4.5-143
• HGiga Msr45 Isherlock-Base: before 4.5-243 — fixed in 4.5-243
• HGiga Msr45 Isherlock-User: before 4.5-114 — fixed in 4.5-114
• HGiga Msr45 Isherlock-Useradmin: before 4.5-122 — fixed in 4.5-122
• HGiga Ssr45 Isherlock-Antispam: before 4.5-130 — fixed in 4.5-130
• HGiga Ssr45 Isherlock-Audit: before 4.5-143 — fixed in 4.5-143
• HGiga Ssr45 Isherlock-Base: before 4.5-243 — fixed in 4.5-243
• HGiga Ssr45 Isherlock-User: before 4.5-114 — fixed in 4.5-114
• HGiga Ssr45 Isherlock-Useradmin: before 4.5-112 — fixed in 4.5-112

How to fix

Upgrade to a fixed version: HGiga Msr45 Isherlock-Antispam 4.5-130; HGiga Msr45 Isherlock-Audit 4.5-143; HGiga Msr45 Isherlock-Base 4.5-243; HGiga Msr45 Isherlock-User 4.5-114; HGiga Msr45 Isherlock-Useradmin 4.5-122; HGiga Ssr45 Isherlock-Antispam 4.5-130; HGiga Ssr45 Isherlock-Audit 4.5-143; HGiga Ssr45 Isherlock-Base 4.5-243; HGiga Ssr45 Isherlock-User 4.5-114; HGiga Ssr45 Isherlock-Useradmin 4.5-112. Check the vendor advisory for mitigations.

References

• https://www.twcert.org.tw/tw/cp-132-4256-cfc5a-1.html
• https://www.twcert.org.tw/tw/cp-132-4256-cfc5a-1.html

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