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CVE-2011-1575

35
FAUCET Score

CVE-2011-1575 describes a plaintext command injection vulnerability in Pure-FTPd versions prior to 1.0.30. This flaw, similar to CVE-2011-0411, allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending cleartext commands that are processed after TLS is established, due to improper I/O buffering in the STARTTLS implementation. The vulnerability has a CVSS score of 5.8, indicating a medium severity, with a network attack vector, medium attack complexity, and potential for partial confidentiality and integrity impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.29CPE matchmatch criteria
cpe:2.3:a:pureftpd:pure-ftpd:*:*:*:*:*:*:*:*
0.90CPE matchmatch criteria
cpe:2.3:a:pureftpd:pure-ftpd:0.90:*:*:*:*:*:*:*
0.91CPE matchmatch criteria
cpe:2.3:a:pureftpd:pure-ftpd:0.91:*:*:*:*:*:*:*
0.92CPE matchmatch criteria
cpe:2.3:a:pureftpd:pure-ftpd:0.92:*:*:*:*:*:*:*
0.93CPE matchmatch criteria
cpe:2.3:a:pureftpd:pure-ftpd:0.93:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
33.34%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.3334 is in the 99th percentile among its peer group of 19,953 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

archives.pureftpd.org / archives.cgi
archives.pureftpd.org / archives.cgi
Patch
lists.opensuse.org / opensuse-security-announce/2011-05/msg00005.html
lists.opensuse.org / opensuse-updates/2011-05/msg00029.html
openwall.com / lists/oss-security/2011/04/11/14
openwall.com / lists/oss-security/2011/04/11/3
openwall.com / lists/oss-security/2011/04/11/7
openwall.com / lists/oss-security/2011/04/11/8
bugzilla.novell.com / show_bug.cgi
Patch
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/43988
Vendor Advisory
secunia.com / advisories/44548
github.com / jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4
Patch
pureftpd.org / project/pure-ftpd/news