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HIGHFixed upstream
CVE-2026-25243
Redis is an in-memory data structure store.
Technology
Redis
CVSS Score
8.8 / 10.0
Affected Versions
<8.6.3
Upstream Fix
See upstream advisory
Published
May 5, 2026
OSSeva Coverage
Fixed upstream
Description
Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in version 8.6.3.
Is your Redis deployment affected?
If you're running <8.6.3, you need this patch. Book a discovery call to get covered.