CVE-2021-32687

Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

• CWE-190
• CWE-680
• CWE-190

• https://github.com/redis/redis/commit/a30d367a71b7017581cf1ca104242a3c644dec0fPatch, Third Party Advisory
• https://github.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27qThird Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/
• https://security.gentoo.org/glsa/202209-17Third Party Advisory
• https://security.netapp.com/advisory/ntap-20211104-0003/Third Party Advisory
• https://www.debian.org/security/2021/dsa-5001Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
• https://github.com/redis/redis/commit/a30d367a71b7017581cf1ca104242a3c644dec0fPatch, Third Party Advisory
• https://github.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27qThird Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/
• https://security.gentoo.org/glsa/202209-17Third Party Advisory
• https://security.netapp.com/advisory/ntap-20211104-0003/Third Party Advisory
• https://www.debian.org/security/2021/dsa-5001Third Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Published

Oct 4, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-32681Wagtail is an open source content management system built on…5.4
• CVE-2021-32682elFinder is an open-source file manager for web, written in …9.8
• CVE-2021-32683wire-webapp is the web version of Wire, an open-source messe…6.1
• CVE-2021-32684magento-scripts contains scripts and configuration used by C…5.5
• CVE-2021-32685tEnvoy contains the PGP, NaCl, and PBKDF2 in node.js and the…9.8
• CVE-2021-32686PJSIP is a free and open source multimedia communication lib…5.9
• CVE-2021-32688Nextcloud Server is a Nextcloud package that handles data st…8.8
• CVE-2021-32689Nextcloud Talk is a fully on-premises audio/video and chat c…6.5
• CVE-2021-32690Helm is a tool for managing Charts (packages of pre-configur…8.6
• CVE-2021-32691Apollos Apps is an open source platform for launching church…9.8
• CVE-2021-32692Activity Watch is a free and open-source automated time trac…9.6
• CVE-2021-32693Symfony is a PHP framework for web and console applications …8.8