How severe is CVE-2020-28186?

CVE-2020-28186 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-28186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28186?

CVE-2020-28186 affects Terra-master Tos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28186?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-28186 published?

CVE-2020-28186 was published on 2020-12-24 and last updated on 2026-06-17.

CVE-2020-28186

CVE-2020-28186 is a high-severity vulnerability in Terra-master Tos with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-640.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 6.8
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Terra-master Tos
Published: 2020-12-24
Last modified: 2026-06-17

Description

Email Injection in TerraMaster TOS <= 4.2.06 allows remote unauthenticated attackers to abuse the forget password functionality and achieve account takeover.

Frequently asked questions

What is CVE-2020-28186?: Email Injection in TerraMaster TOS <= 4.2.06 allows remote unauthenticated attackers to abuse the forget password functionality and achieve account takeover.
How severe is CVE-2020-28186?: CVE-2020-28186 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-28186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28186?: CVE-2020-28186 affects Terra-master Tos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-28186 published?: CVE-2020-28186 was published on 2020-12-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:terra-master:tos:*:*:*:*:*:*:*:*

More vulnerabilities in Terra-master Tos

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