CVE-2010-3494
Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service…
- 4.3MediumCVSS base score
- 2.3%Exploitation in 30 daysEPSS · top 17% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 25 days later
· 25 days later
Published
- 14 years later
· 14 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.3% · top 17% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIpyftpdlibGHSA-hw4g-fhcp-x5mq (opens in a new tab)
References
11
- [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://code.google.com/p/pyftpdlib/source/detail?r=556 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugs.launchpad.net/zodb/+bug/135108 (opens in a new tab)x_refsource_MISCx_transferred
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn556&r=556&format=side&path=/trunk/pyftpdlib/ftpserver.py (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://code.google.com/p/pyftpdlib/issues/detail?id=105 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://code.google.com/p/pyftpdlib/issues/detail?id=104 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.python.org/issue6706 (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-0015 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-hw4g-fhcp-x5mq (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-3494)Record last updated .