CVE-2011-4409
HIGH · CVSS 7.5EPSS 1.7%EU EUVD
The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.
Key facts
- CVSS score
- 7.5 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 1.7% (78th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-4338)
- Published
- June 16, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-4338 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
References
- http://secunia.com/advisories/49442(Vendor Advisory)
- http://ubuntu.com/usn/usn-1465-1(Vendor Advisory)
- http://ubuntu.com/usn/usn-1465-2(Vendor Advisory)
- http://ubuntu.com/usn/usn-1465-3
- http://www.osvdb.org/82748
- http://www.securityfocus.com/bid/53828
- https://exchange.xforce.ibmcloud.com/vulnerabilities/76113
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain