How severe is CVE-2020-12470?

CVE-2020-12470 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-12470 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12470?

CVE-2020-12470 affects Mono Monox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12470?

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-2020-12470 published?

CVE-2020-12470 was published on 2020-04-29 and last updated on 2026-06-17.

CVE-2020-12470

CVE-2020-12470 is a high-severity vulnerability in Mono Monox with a CVSS 3.x base score of 7.2. 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-552.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-552
Affected product: Mono Monox
Published: 2020-04-29
Last modified: 2026-06-17

Description

MonoX through 5.1.40.5152 allows administrators to execute arbitrary code by modifying an ASPX template.

Frequently asked questions

What is CVE-2020-12470?: MonoX through 5.1.40.5152 allows administrators to execute arbitrary code by modifying an ASPX template.
How severe is CVE-2020-12470?: CVE-2020-12470 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-12470 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12470?: CVE-2020-12470 affects Mono Monox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12470?: 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-2020-12470 published?: CVE-2020-12470 was published on 2020-04-29 and last updated on 2026-06-17.

References

https://github.com/belong2yourself/vulnerabilities/tree/master/MonoX%20CMS/Privilege%20Escalation%20via%20Template%20Modification

Affected products (1)

cpe:2.3:a:mono:monox:*:*:*:*:*:*:*:*

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CVE-2020-12471 — Critical (CVSS 9.8): MonoX through 5.1.40.5152 allows remote code execution via HTML5Upload.ashx or…
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