EasyFTP Server <= 1.7.0.11 CWD Command Stack Buffer Overflow
Published Aug 21, 2025
9.3
CRITICALCVSS 4.0
EPSS 3.22%
Description
EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed “UplusFtp.”
Affected products
-
- Version -StatusaffectedConstraints<=1.7.0.11
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| KMiNT21 Software | EasyFTP Server | unaffected |
|
- < 1.7.0.12
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Aug 22, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.22% (0.03221) | 87.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.03% (0.03031) | 85.72th | v5 (v2026.06.15) |
| Jan 17, 2026 | 69.27% (0.69267) | 98.59th | v4 (v2025.03.14) |
| Dec 21, 2025 | 74.88% (0.74878) | 98.81th | v4 (v2025.03.14) |
| Oct 8, 2025 | 72.21% (0.72209) | 98.68th | v4 (v2025.03.14) |
| Oct 2, 2025 | 6.26% (0.06263) | 90.59th | v4 (v2025.03.14) |
| Sep 16, 2025 | 4.35% (0.04346) | 88.48th | v4 (v2025.03.14) |
| Sep 15, 2025 | 5.79% (0.05786) | 90.14th | v4 (v2025.03.14) |
| Sep 11, 2025 | 4.47% (0.04473) | 88.67th | v4 (v2025.03.14) |
| Aug 22, 2025 | 0.66% (0.00660) | 70.17th | v4 (v2025.03.14) |
References (8)
- https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ technical-descriptionexploitThird Party Advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb exploit
- https://seclists.org/bugtraq/2010/Feb/202 exploitthird-party-advisoryMailing ListThird Party Advisory
- https://www.exploit-db.com/exploits/11668 exploitVDB Entry
- https://www.exploit-db.com/exploits/12312 exploitVDB Entry
- https://www.exploit-db.com/exploits/14402 exploitVDB Entry
- https://www.exploit-db.com/exploits/16737 exploitVDB Entry
- https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ | technical-descriptionexploitThird Party Advisory | |
| https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb | exploit | |
| https://seclists.org/bugtraq/2010/Feb/202 | exploitthird-party-advisoryMailing ListThird Party Advisory | |
| https://www.exploit-db.com/exploits/11668 | exploitVDB Entry | |
| https://www.exploit-db.com/exploits/12312 | exploitVDB Entry | |
| https://www.exploit-db.com/exploits/14402 | exploitVDB Entry | |
| https://www.exploit-db.com/exploits/16737 | exploitVDB Entry | |
| https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.