How severe is CVE-2021-30463?

CVE-2021-30463 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30463?

CVE-2021-30463 affects Vestacp Control Panel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30463?

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

When was CVE-2021-30463 published?

CVE-2021-30463 was published on 2021-04-08 and last updated on 2026-06-17.

CVE-2021-30463

CVE-2021-30463 is a high-severity vulnerability in Vestacp Control Panel with a CVSS 3.x base score of 7.8. 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-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Vestacp Control Panel
Published: 2021-04-08
Last modified: 2026-06-17

Description

VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions. After reading the RKEY value from user.conf under the /usr/local/vesta/data/users/admin directory, the admin password can be changed via a /reset/?action=confirm&user=admin&code= URI. This occurs because chmod is used unsafely.

Frequently asked questions

What is CVE-2021-30463?: VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions. After reading the RKEY value from user.conf under the /usr/local/vesta/data/users/admin directory, the admin password can be changed via a /reset/?action=confirm&user=admin&code= URI. This occurs because chmod is used unsafely.
How severe is CVE-2021-30463?: CVE-2021-30463 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30463?: CVE-2021-30463 affects Vestacp Control Panel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-30463 published?: CVE-2021-30463 was published on 2021-04-08 and last updated on 2026-06-17.

References

https://ssd-disclosure.com/ssd-advisory-vestacp-lpe-vulnerabilities/

Affected products (1)

cpe:2.3:a:vestacp:control_panel:*:*:*:*:*:*:*:*

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