CVE-2015-3306 (GCVE-0-2015-3306)
Vulnerability from cvelistv5 – Published: 2015-05-18 15:00 – Updated: 2026-10-09 16:02Summary
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.
Severity
10 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 03:55 UTC
CWE
- n/a
- CWE-284 - Improper Access Control
Assigner
References
15 references
Date Public
2015-04-07 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1c3d1533-af22-4f56-b1ac-d01e7142b858
Exploited: Yes
Timestamps
First Seen: 2026-10-08
Asserted: 2026-10-08
Scope
Notes: ProFTPD Improper Access Control Vulnerability | Affected: ProFTPD / ProFTPD | Description: ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands. | Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. | Due date: 2026-10-11 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: http://www.proftpd.org/ ; https://lists.debian.org/debian-security-announce/2015/msg00154.html ; https://lists.opensuse.org/archives/list/updates@lists.opensuse.org/message/WE6YZRG5UVXMGQ7IVDRYBPIWV4M6UUGM/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-3306
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-284 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | ProFTPD |
| Due Date | 2026-10-11 |
| Date Added | 2026-10-08 |
| Vendorproject | ProFTPD |
| Vulnerabilityname | ProFTPD Improper Access Control Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-09 06:23 CEST
| Updated: 2026-10-09 06:23 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5d405b71-b950-44ee-8d2f-0fc57d349b85
Exploited: Yes
Timestamps
First Seen: 2026-10-08
Asserted: 2026-10-08
Scope
Notes: 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. | Affected: Proftpd / Proftpd | CVSS: 10.0 (CRITICAL) | EPSS: 0.98033 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | 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. |
| Cve Id | CVE-2015-3306 |
| Vendor | Proftpd |
| Ghsa Id | GHSA-4MFJ-5WR8-X32Q |
| Product | Proftpd |
| Added Date | 2026-10-08T17:40:54.555Z |
| Cvss Score | 10.0 |
| Epss Score | 0.98033 |
| Previous Ids | |
| Cvss Severity | CRITICAL |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.9991 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2015-3306 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-10 06:43 CEST
| Updated: 2026-10-10 06:43 CEST
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"dateUpdated": "2026-10-09T16:02:13.824Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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