How severe is CVE-2020-12828?

CVE-2020-12828 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-2020-12828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12828?

CVE-2020-12828 affects Pango Virtual Private Network Software Development Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12828?

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-2020-12828 published?

CVE-2020-12828 was published on 2020-05-21 and last updated on 2026-06-17.

CVE-2020-12828

CVE-2020-12828 is a critical-severity vulnerability in Pango Virtual Private Network Software Development Kit 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Pango Virtual Private Network Software Development Kit
Published: 2020-05-21
Last modified: 2026-06-17

Description

An issue was discovered in AnchorFree VPN SDK before 1.3.3.218. The VPN SDK service takes certain executable locations over a socket bound to localhost. Binding to the socket and providing a path where a malicious executable file resides leads to executing the malicious executable file with SYSTEM privileges.

Frequently asked questions

What is CVE-2020-12828?: An issue was discovered in AnchorFree VPN SDK before 1.3.3.218. The VPN SDK service takes certain executable locations over a socket bound to localhost. Binding to the socket and providing a path where a malicious executable file resides leads to executing the malicious executable file with SYSTEM privileges.
How severe is CVE-2020-12828?: CVE-2020-12828 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-2020-12828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12828?: CVE-2020-12828 affects Pango Virtual Private Network Software Development Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12828?: 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-2020-12828 published?: CVE-2020-12828 was published on 2020-05-21 and last updated on 2026-06-17.

References

https://www.pango.co/sec31944/

Affected products (1)

cpe:2.3:a:pango:virtual_private_network_software_development_kit:*:*:*:*:*:*:*:*

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