How severe is CVE-2015-3306?

CVE-2015-3306 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2015-3306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 97% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3306?

CVE-2015-3306 affects Proftpd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-3306?

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-2015-3306 published?

CVE-2015-3306 was published on 2015-05-18 and last updated on 2026-06-17.

CVE-2015-3306

CVE-2015-3306 is a critical-severity vulnerability in Proftpd with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 97% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-284.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 97% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Proftpd
Published: 2015-05-18
Last modified: 2026-06-17

Description

The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.

Frequently asked questions

What is CVE-2015-3306?: The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.
How severe is CVE-2015-3306?: CVE-2015-3306 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2015-3306 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 97% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3306?: CVE-2015-3306 affects Proftpd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-3306?: 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-2015-3306 published?: CVE-2015-3306 was published on 2015-05-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:proftpd:proftpd:1.3.5:*:*:*:*:*:*:*

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Browse all CWE-284 (Improper Access Control) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

187.39.201.19 (ipv4-addr)
38.183.87.233 (ipv4-addr)