CVE-2026-25243
High
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.
SeverityHigh
CVSS7.7
Exploit probability91. percentile4%
Product
Redis
PublishedMay 5, 2026
First seenMay 5, 2026
Weakness typeCWE-122CWE-122
How to fix
Update
- redis redis8.6.3 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:26540
- access.redhat.com/errata/RHSA-2026:25216
- access.redhat.com/errata/RHSA-2026:26008
- access.redhat.com/errata/RHSA-2026:27787
- access.redhat.com/errata/RHSA-2026:29817
- access.redhat.com/errata/RHSA-2026:33427
- access.redhat.com/errata/RHSA-2026:27716
- access.redhat.com/errata/RHSA-2026:28139
- access.redhat.com/errata/RHSA-2026:28142
- access.redhat.com/errata/RHSA-2026:26233
- access.redhat.com/errata/RHSA-2026:26306
- access.redhat.com/errata/RHSA-2026:23229
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redis redis | v < 8.6.3 | 8.6.3 |
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