CVE-2009-1611: Stack-based buffer overflow in ElectraSoft 32bit FTP 09.04.24 allows remote FTP servers to execute arbitrary c

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HIGH 10.0DOWNGRADE

CVE-2009-1611 is a high-severity flaw (CVSS 10.0) affecting 32bit ftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in ElectraSoft 32bit FTP 09.04.24 allows remote FTP servers to execute arbitrary code via a long 257 reply to a CWD command.

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	7.2% (top 6%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-05-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: electrasoft

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-05-11 20:00 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

electrasoft 32bit ftp DOWNGRADE

Affected: 09.04.24

Fixed in: no fixed release known

Safe to downgrade to: a release before 09.04.24

1. Check installed version

apt-cache policy 32bit-ftp || rpm -q 32bit-ftp || 32bit-ftp --version

2. No fixed release: DOWNGRADE to a release before 09.04.24 (Debian / Ubuntu)

apt-cache madison 32bit-ftp sudo apt install 32bit-ftp=<VERSION_BEFORE_09.04.24> sudo apt-mark hold 32bit-ftp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list 32bit-ftp sudo dnf downgrade 32bit-ftp-<VERSION_BEFORE_09.04.24> sudo dnf versionlock add 32bit-ftp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: 32bit FTP (09.04.24) - 'CWD Response' Remote Buffer Overflow
Exploit-DB: 32bit FTP (09.04.24) - 'CWD Response' Universal Overwrite (SEH)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2009-1611?

32bit ftp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-1611 being exploited?

CVE-2009-1611 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-1611 affect?

CVE-2009-1611 affects 32bit ftp. Severity is high (CVSS 10.0). Stack-based buffer overflow in ElectraSoft 32bit FTP 09.04.24 allows remote FTP servers to execute arbitrary code via a long 257 reply to a CWD command.

How urgent is CVE-2009-1611?

Priority 64/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2009-1675 HIGH 9.3 DOWNGRADE Stack-based buffer overflow in ElectraSoft 32bit FTP 09.04.24 allows remote FTP servers to execute arbitrary c
CVE-2009-1592 HIGH 10.0 DOWNGRADE Stack-based buffer overflow in ElectraSoft 32bit FTP 09.04.24 allows remote FTP servers to execute arbitrary c

References

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