CVE-2011-1137

CVE-2011-1137 is a medium-severity vulnerability in Proftpd with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

Description

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 (memory consumption leading to OOM kill) via a malformed SSH message.

Frequently asked questions

What is CVE-2011-1137?
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 (memory consumption leading to OOM kill) via a malformed SSH message.
How severe is CVE-2011-1137?
CVE-2011-1137 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1137 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1137?
CVE-2011-1137 primarily affects Proftpd. In total, 65 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1137?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1137 published?
CVE-2011-1137 was published on 2011-03-11 and last updated on 2026-06-16.

References

Affected products (65)

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