CVE-2020-22570
memcached: NULL pointer dereference in process_mget_command function in memcached.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 22, 2023
Updated · November 22, 2025
Description
A vulnerability was found in Memcached. This security issue appears as a NULL pointer dereference vulnerability in memcached.c that allows remote attackers to cause a denial of service (daemon crash) via a crafted meta-command.
Statement
This issue does not affect Red Hat Enterprise Linux 6, 7, 8 and 9 as the affected version of memcached package is currently not provided in any of our supported products.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')