How severe is CVE-2020-9389?

CVE-2020-9389 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-9389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9389?

CVE-2020-9389 affects Squaredup. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9389?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-9389 published?

CVE-2020-9389 was published on 2021-02-03 and last updated on 2026-06-17.

CVE-2020-9389

CVE-2020-9389 is a low-severity vulnerability in Squaredup with a CVSS 3.x base score of 3.7. 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-203.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Squaredup
Published: 2021-02-03
Last modified: 2026-06-17

Description

A username enumeration issue was discovered in SquaredUp before version 4.6.0. The login functionality was implemented in a way that would enable a malicious user to guess valid username due to a different response time from invalid usernames.

Frequently asked questions

What is CVE-2020-9389?: A username enumeration issue was discovered in SquaredUp before version 4.6.0. The login functionality was implemented in a way that would enable a malicious user to guess valid username due to a different response time from invalid usernames.
How severe is CVE-2020-9389?: CVE-2020-9389 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-9389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9389?: CVE-2020-9389 affects Squaredup. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9389 published?: CVE-2020-9389 was published on 2021-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:squaredup:squaredup:*:*:*:*:system_center_operations_manager:*:*:*

More vulnerabilities in Squaredup

CVE-2021-40091 — Critical (CVSS 9.8): An SSRF issue was discovered in SquaredUp for SCOM 5.2.1.6654.
CVE-2020-9388 — Medium (CVSS 6.5): CSRF protection was not present in SquaredUp before version 4.6.0. A CSRF attack could have been possible by an…
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CVE-2021-40093 — Medium (CVSS 5.4): A cross-site scripting (XSS) vulnerability in integration configuration in SquaredUp for SCOM 5.2.1.6654 allows remote…
CVE-2021-40092 — Medium (CVSS 5.4): A cross-site scripting (XSS) vulnerability in Image Tile in SquaredUp for SCOM 5.2.1.6654 allows remote attackers to…

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