How severe is CVE-2020-23679?

CVE-2020-23679 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-2020-23679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23679?

CVE-2020-23679 affects Linux Network Project. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23679?

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-2020-23679 published?

CVE-2020-23679 was published on 2021-11-03 and last updated on 2026-06-17.

CVE-2020-23679

CVE-2020-23679 is a critical-severity vulnerability in Linux Network Project 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Linux Network Project
Published: 2021-11-03
Last modified: 2026-06-17

Description

Buffer overflow vulnerability in Renleilei1992 Linux_Network_Project 1.0, allows attackers to execute arbitrary code, via the password field.

Frequently asked questions

What is CVE-2020-23679?: Buffer overflow vulnerability in Renleilei1992 Linux_Network_Project 1.0, allows attackers to execute arbitrary code, via the password field.
How severe is CVE-2020-23679?: CVE-2020-23679 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-2020-23679 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23679?: CVE-2020-23679 affects Linux Network Project. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23679?: 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-2020-23679 published?: CVE-2020-23679 was published on 2021-11-03 and last updated on 2026-06-17.

References

https://github.com/Renleilei1992/Linux_Network_Project/issues/1

Affected products (1)

cpe:2.3:a:linux_network_project:linux_network_project:1.0:*:*:*:*:*:*:*

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