Monsta FTP <= 2.11 Unauthenticated Arbitrary File Upload
Priority CRITICAL 86CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
Monsta FTP versions 2.11 and earlier contain a vulnerability that allows unauthenticated arbitrary file uploads. This flaw enables attackers to execute arbitrary code by uploading a specially crafted file from a malicious (S)FTP server.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.7268 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Monsta Limited of New Zealand | Monsta FTP | up to 2.11 | — | No fix listed | CNA |
- Monsta FTP VendorMonsta Limited of New Zealand Affected up to 2.11 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34299
- 2026-10-03 Alias added: GHSA-42m5-3r2p-wr92
References
More Monsta Limited of New Zealand vulnerabilities
- TI-2026-42829 Monsta FTP < 2.14.5 SSRF via IPv4-Mapped IPv6 Address Bypass CVSS 4.0HIGH 7.7
Sources
- CVE-2025-34299 · CVE Program
- CVE-2025-34299 · NVD
- FIRST EPSS
- GHSA-42m5-3r2p-wr92 · GitHub Advisory Database · CC BY 4.0
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