How severe is CVE-2020-3926?

CVE-2020-3926 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-3926 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3926?

CVE-2020-3926 affects Changingtec Servisign. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-3926?

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

When was CVE-2020-3926 published?

CVE-2020-3926 was published on 2020-02-03 and last updated on 2026-06-17.

CVE-2020-3926

CVE-2020-3926 is a medium-severity vulnerability in Changingtec Servisign with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v2: 7.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-552
Affected product: Changingtec Servisign
Published: 2020-02-03
Last modified: 2026-06-17

Description

An arbitrary-file-access vulnerability exists in ServiSign security plugin, as long as the attackers learn the specific API function, they may access arbitrary files on target system via crafted API parameter.

Frequently asked questions

What is CVE-2020-3926?: An arbitrary-file-access vulnerability exists in ServiSign security plugin, as long as the attackers learn the specific API function, they may access arbitrary files on target system via crafted API parameter.
How severe is CVE-2020-3926?: CVE-2020-3926 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-3926 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3926?: CVE-2020-3926 affects Changingtec Servisign. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-3926?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3926 published?: CVE-2020-3926 was published on 2020-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:changingtec:servisign:*:*:*:*:*:*:*:*

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