Is CVE-2011-1137 in the CISA KEV catalog?

No. CVE-2011-1137 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1137?

CVE-2011-1137 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-1137?

CVE-2011-1137 has an EPSS score of 28.07% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1137?

Upgrade proftpd-dfsg on debian 11 to 1.3.3d-4 or later.

CVE & CISA-KEV Catalog

CVE-2011-1137

MEDIUMEPSS 98th pctl

5.0

CVSS v2

NVD

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.

CWE-189

How to fix

Remediation Available

proftpd-dfsgDebian

Fixed in:1.3.3d-4CVE-2011-1137

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

28.07%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Patch3

Exploit2

Vendor Advisory5

Other references7

Related Vulnerabilities

Other CWE-189 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-1538	High	10.0	99%	-	-
CVE-2006-3747	High	7.6	96%	-	Fix
CVE-2007-0071	High	9.3	93%	-	-
CVE-2015-3829	High	10.0	90%	-	-
CVE-2015-3864	High	10.0	87%	-	-
CVE-2015-1539	High	10.0	86%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.