Multiple integer signedness errors in the (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend functions in Memcached 1.4.5 and earlier allow remote attackers to cause a denial of service (crash) via a large body length value in a packet.
Published 2013-12-12 18:55:04
Updated 2018-03-25 01:29:00
Source Red Hat, Inc.
View at NVD,
Vulnerability category: Denial of service

Threat overview for CVE-2011-4971

Top countries where our scanners detected CVE-2011-4971
Top open port discovered on systems with this issue 11211
IPs affected by CVE-2011-4971 1,743
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2011-4971!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2011-4971

Probability of exploitation activity in the next 30 days EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2011-4971

  • Memcached Remote Denial of Service
    First seen: 2020-04-26
    This module sends a specially-crafted packet to cause a segmentation fault in memcached v1.4.15 or earlier versions. Authors: - Gregory Man <>

CVSS scores for CVE-2011-4971

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen

CWE ids for CVE-2011-4971

  • Assigned by: (Primary)

References for CVE-2011-4971

Products affected by CVE-2011-4971

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