HIGH
The ftp_STOU function in FTPServer.py in pyftpdlib before 0.2.0 does not limit the number of attempts to discover a unique filename, which might allow remote authenticated users to cause a denial of service via a STOU command
Published Oct 19, 2010
7.1
HIGHCVSS 4.0
EPSS 1.75%
Description
The ftp_STOU function in FTPServer.py in pyftpdlib before 0.2.0 does not limit the number of attempts to discover a unique filename, which might allow remote authenticated users to cause a denial of service via a STOU command.
Affected products
Remediation
No remediation recorded yet.
Metrics
7.1 HIGH GHSA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required Low
User Interaction None
Vulnerable System Confidentiality None
Vulnerable System Integrity None
Vulnerable System Availability High
Subsequent System Confidentiality None
Subsequent System Integrity None
Subsequent System Availability None
6.5 HIGH GHSA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
4.0 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.75% 0.01748
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01748
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01748) | 77.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.16% (0.01156) | 62.79th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.51% (0.00513) | 64.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00240) | 62.91th | v3 (v2023.03.01) |
| May 10, 2024 | 0.21% (0.00214) | 59.19th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.20% (0.00203) | 57.86th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.19% (0.00188) | 55.12th | v3 (v2023.03.01) |
| Jun 9, 2023 | 0.27% (0.00272) | 63.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.29% (0.00291) | 64.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.13% (0.01132) | 56.11th | v2 (v2022.01.01) |
| Sep 22, 2022 | 1.13% (0.01132) | 54.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.13% (0.01132) | 52.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.13% (0.01132) | 30.65th | v2 (v2022.01.01) |
Weaknesses (2)
References (8)
- http://code.google.com/p/pyftpdlib/issues/detail?id=25 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/detail?r=37 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn37&r=37&format=side&path=/trunk/pyftpdlib/FTPServer.py x_refsource_CONFIRM
- https://github.com/advisories/GHSA-cx59-cp6c-9fr8 Advisory
- https://github.com/giampaolo/pyftpdlib/issues/25
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-24.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2007-6740
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 19, 2010
Updated Sep 17, 2024
Reserved Oct 19, 2010
Link CVE-2007-6740
CISA Vulnrichment
GHSA-CX59-CP6C-9FR8 Updated n/a