How severe is CVE-2020-36243?

CVE-2020-36243 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-36243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 64% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36243?

CVE-2020-36243 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36243?

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-2020-36243 published?

CVE-2020-36243 was published on 2021-02-07 and last updated on 2026-06-17.

CVE-2020-36243

CVE-2020-36243 is a high-severity vulnerability in Open-emr Openemr with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 64% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 64% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Open-emr Openemr
Published: 2021-02-07
Last modified: 2026-06-17

Description

The Patient Portal of OpenEMR 5.0.2.1 is affected by a Command Injection vulnerability in /interface/main/backup.php. To exploit the vulnerability, an authenticated attacker can send a POST request that executes arbitrary OS commands via shell metacharacters.

Frequently asked questions

What is CVE-2020-36243?: The Patient Portal of OpenEMR 5.0.2.1 is affected by a Command Injection vulnerability in /interface/main/backup.php. To exploit the vulnerability, an authenticated attacker can send a POST request that executes arbitrary OS commands via shell metacharacters.
How severe is CVE-2020-36243?: CVE-2020-36243 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-36243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 64% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36243?: CVE-2020-36243 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36243?: 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-2020-36243 published?: CVE-2020-36243 was published on 2021-02-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-emr:openemr:5.0.2.1:*:*:*:*:*:*:*

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