Is CVE-2011-4971 in the CISA KEV catalog?

No. CVE-2011-4971 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4971?

CVE-2011-4971 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-4971?

CVE-2011-4971 has an EPSS score of 22.32% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-4971

MEDIUMEPSS 97th pctl

5.0

CVSS v2

NVD

Description

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.

CWE-189

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

22.32%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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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.