How severe is CVE-2020-7878?

CVE-2020-7878 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-7878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7878?

CVE-2020-7878 affects 4nb Videooffice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7878?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-7878 published?

CVE-2020-7878 was published on 2021-12-28 and last updated on 2026-06-17.

CVE-2020-7878

CVE-2020-7878 is a critical-severity vulnerability in 4nb Videooffice with a CVSS 3.x base score of 9.8. 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-345.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: 4nb Videooffice
Published: 2021-12-28
Last modified: 2026-06-17

Description

An arbitrary file download and execution vulnerability was found in the VideoOffice X2.9 and earlier versions (CVE-2020-7878). This issue is due to missing support for integrity check.

Frequently asked questions

What is CVE-2020-7878?: An arbitrary file download and execution vulnerability was found in the VideoOffice X2.9 and earlier versions (CVE-2020-7878). This issue is due to missing support for integrity check.
How severe is CVE-2020-7878?: CVE-2020-7878 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-7878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7878?: CVE-2020-7878 affects 4nb Videooffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-7878 published?: CVE-2020-7878 was published on 2021-12-28 and last updated on 2026-06-17.

References

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36349

Affected products (1)

cpe:2.3:a:4nb:videooffice:*:*:*:*:*:*:*:*

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