CVE-2010-20122
CVE-2010-20122 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2010-5323
- Weakness: CWE-121
- Published:
- Last modified:
Description
Xftp FTP Client version up to and including 3.0 (build 0238) contain a stack-based buffer overflow vulnerability triggered by a maliciously crafted PWD response from an FTP server. When the client connects to a server and receives an overly long directory string in response to the PWD command, the client fails to properly validate the length of the input before copying it into a fixed-size buffer. This results in memory corruption and allows remote attackers to execute arbitrary code on the client system.
Frequently asked questions
- What is CVE-2010-20122?
- Xftp FTP Client version up to and including 3.0 (build 0238) contain a stack-based buffer overflow vulnerability triggered by a maliciously crafted PWD response from an FTP server. When the client connects to a server and receives an overly long directory string in response to the PWD command, the client fails to properly validate the length of the input before copying it into a fixed-size buffer. This results in memory corruption and allows remote attackers to execute arbitrary code on the client system.
- How severe is CVE-2010-20122?
- CVE-2010-20122 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2010-20122 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2010-20122?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2010-20122 have an EU (EUVD) identifier?
- Yes. CVE-2010-20122 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2010-5323.
- When was CVE-2010-20122 published?
- CVE-2010-20122 was published on 2025-08-21 and last updated on 2026-06-16.
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/xftp_client_pwd.rb
- https://web.archive.org/web/20090312072219/http://www.netsarang.com/download/down_xft3.html
- https://www.exploit-db.com/exploits/12332
- https://www.exploit-db.com/exploits/16739
- https://www.vulncheck.com/advisories/xftp-ftp-client-pwd-response-buffer-overflow
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