Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492
Published Oct 19, 2010
8.7
HIGHCVSS 4.0
EPSS 2.29%
Description
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.
Affected products
No data.
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:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.29% (0.02294) | 82.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.58% (0.01582) | 72.27th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.44% (0.00439) | 60.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.33% (0.05333) | 93.38th | v3 (v2023.03.01) |
| Sep 17, 2024 | 5.33% (0.05333) | 93.24th | v3 (v2023.03.01) |
| May 24, 2024 | 1.88% (0.01880) | 88.43th | v3 (v2023.03.01) |
| May 10, 2024 | 1.59% (0.01586) | 87.27th | v3 (v2023.03.01) |
| Apr 25, 2024 | 1.34% (0.01345) | 85.92th | v3 (v2023.03.01) |
| Mar 15, 2024 | 1.28% (0.01283) | 85.42th | v3 (v2023.03.01) |
| Feb 8, 2024 | 1.08% (0.01080) | 83.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.33% (0.05333) | 91.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (14)
- http://bugs.python.org/issue6706 x_refsource_MISCPatch
- http://code.google.com/p/pyftpdlib/issues/detail?id=104 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/issues/detail?id=105 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=556 x_refsource_CONFIRM
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2010/09/09/6 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/09/11/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/09/22/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/09/24/3 mailing-listx_refsource_MLIST
- https://bugs.launchpad.net/zodb/+bug/135108 x_refsource_MISC
- https://github.com/advisories/GHSA-hw4g-fhcp-x5mq Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-11.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2010-3494
Change history (0)
No recorded changes yet.