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CVE-2011-4130· NVD / CVE Program· CNA redhat

Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via ve

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.

CriticalCVSS 9.0 · v2.0—No exploit Fix available
Published
Dec 6, 2011
Updated
Jun 16, 2026
EPSS
12.6% · 96th percentile
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Report tools

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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%

Affected systems

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
  • 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

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.
    69This week
  • 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 exe
    67This week
  • CVE-2019-12815An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for remote code execution and information disclosure without
    56Plan
  • CVE-2010-20103ProFTPD 1.3.3c Backdoor Command Execution
    39Monitor
  • CVE-2020-9273In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel.
    39Monitor
  • CVE-2019-18217ProFTPD before 1.3.6b and 1.3.7rc before 1.3.7rc2 allows remote unauthenticated denial-of-service due to incorrect handling of overly long c
    36Monitor

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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

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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

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References

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

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