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NVD / CVE Program· CNA redhat

CVE-2011-4130: Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via…

CriticalCVSS 9.0 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 12.6% (FIRST EPSS); higher than 96.3% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: proftpd-dfsg (Debian:12) 1.3.4~rc3-2; proftpd-dfsg (Debian:5.0) 1.3.1-17lenny8, 1.3.1-17lenny9; proftpd-dfsg (Debian:6.0) 1.3.3a-6squeeze4.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Upgrade to proftpd-dfsg (Debian:12) 1.3.4~rc3-2; proftpd-dfsg (Debian:5.0) 1.3.1-17lenny8, 1.3.1-17lenny9; proftpd-dfsg (Debian:6.0) 1.3.3a-6squeeze4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via vectors involving an error that occurs after an FTP data transfer.

Published
Dec 6, 2011
Updated
Jun 16, 2026
EPSS
12.6% · 96th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
36 / 40 · 9.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
4 / 30 · 12.6%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
proftpdproftpd

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • proftpd proftpdup to 1.3.3 inclusive
  • proftpd proftpd1.2.0
  • proftpd proftpd1.2.1
  • proftpd proftpd1.2.10
  • proftpd proftpd1.2.2
  • proftpd proftpd1.2.3
  • proftpd proftpd1.2.4
  • proftpd proftpd1.2.5
+8 more rows
  • proftpd proftpd1.2.6
  • proftpd proftpd1.2.7
  • proftpd proftpd1.2.8
  • proftpd proftpd1.2.9
  • proftpd proftpd1.3.0
  • proftpd proftpd1.3.1
  • proftpd proftpd1.3.2
  • proftpd proftpd1.3.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12proftpd-dfsgbefore 1.3.4~rc3-21.3.4~rc3-2
Debian:5.0proftpd-dfsgbefore 1.3.1-17lenny81.3.1-17lenny8
Debian:5.0proftpd-dfsgbefore 1.3.1-17lenny91.3.1-17lenny9
Debian:6.0proftpd-dfsgbefore 1.3.3a-6squeeze41.3.3a-6squeeze4
openSUSE:Tumbleweedproftpdbefore 1.3.5b-2.51.3.5b-2.5

Same product

proftpd: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-3306The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.KEV
    100Now
  • CVE-2010-4221Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to…
    67This week
  • CVE-2010-20103ProFTPD 1.3.3c Backdoor Command Execution
    60This week

Published before and after this one in the same product

  • ← EarlierCVE-2010-4652Feb 1, 2011 · Heap-based buffer overflow in the sql_prepare_where function (contrib/mod_sql.c) in ProFTPD before 1.3.3d, when mod_sql is enabled, allows…
    30Monitor
  • ← EarlierCVE-2011-1137Mar 11, 2011 · Integer overflow in the mod_sftp (aka SFTP) module in ProFTPD 1.3.3d and earlier allows remote attackers to cause a denial of service…
    28Monitor
  • Later →CVE-2012-6095Jan 24, 2013 · ProFTPD before 1.3.5rc1, when using the UserOwner directive, allows local users to modify the ownership of arbitrary files via a race…
    4Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:proftpd-dfsg1.3.4~rc3-2 · Debian:12Package registry (OSV)
opensuse:proftpd1.3.5b-2.5 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

CWE-399 · Resource Management Errors

CVSS vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records