How severe is CVE-2020-16230?

CVE-2020-16230 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-16230 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16230?

CVE-2020-16230 primarily affects Hms-networks Ewon Flexy Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-16230?

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

When was CVE-2020-16230 published?

CVE-2020-16230 was published on 2020-09-18 and last updated on 2026-06-17.

CVE-2020-16230

CVE-2020-16230 is a low-severity vulnerability in Hms-networks Ewon Flexy Firmware with a CVSS 3.x base score of 2.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 3.x base score 2.3)
CVSS v2: 2.1
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hms-networks Ewon Flexy Firmware
Published: 2020-09-18
Last modified: 2026-06-17

Description

All version of Ewon Flexy and Cosy prior to 14.1 use wildcards such as (*) under which domains can request resources. An attacker with local access and high privileges could inject scripts into the Cross-origin Resource Sharing (CORS) configuration that could abuse this vulnerability, allowing the attacker to retrieve limited confidential information through sniffing.

Frequently asked questions

What is CVE-2020-16230?: All version of Ewon Flexy and Cosy prior to 14.1 use wildcards such as (*) under which domains can request resources. An attacker with local access and high privileges could inject scripts into the Cross-origin Resource Sharing (CORS) configuration that could abuse this vulnerability, allowing the attacker to retrieve limited confidential information through sniffing.
How severe is CVE-2020-16230?: CVE-2020-16230 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-16230 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16230?: CVE-2020-16230 primarily affects Hms-networks Ewon Flexy Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-16230?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-16230 published?: CVE-2020-16230 was published on 2020-09-18 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-254-03

Affected products (2)

cpe:2.3:o:hms-networks:ewon_flexy_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hms-networks:ewon_cosy_firmware:*:*:*:*:*:*:*:*

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