CVE-2026-25243GHSA-c8h9-259x-jff4
redis-server RESTORE invalid memory access may allow remote code execution
CVSS
7.7HighExploitationExploitation reported1 outlet report it, first 20 Oct 2026. Not yet in the KEV catalogReports
Exploit odds (EPSS)3.66%Chance of exploitation activity in the next 30 days, higher than 89% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Timeline
- 5 May 2026, 16:44 UTCPublishedCVE List
- 20 Oct 2026, 02:02 UTCFirst reported exploitedBluesky: exploited in the wild
- NowNot on CISA's known exploited list yet
Reports 1
One outlet reports exploitation. Reports are not confirmation; each links to its source.
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.
Text from CVE List
Affected versions 2
- redisaffected: < 8.6.3CVE List
- redis-serverAllGitHub
References 20
- github.com/redis/redis/releases/tag/8.6.3Fixvia CVE List
- github.com/redis/redis/security/advisories/GHSA-c8h9-259x-jff4Advisoryvia CVE List
- access.redhat.com/security/cve/CVE-2026-25243Advisoryvia CVE List
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25243.jsonAdvisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:26540Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:25216Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:26008Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:27787Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:29817Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:33427Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:27716Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:28139Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:28142Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:26233Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:26306Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:23229Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:25219Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:25925Advisoryvia CVE List
- access.redhat.com/errata/RHSA-2026:14316Advisoryvia CVE List
- bugzilla.redhat.com/show_bug.cgi?id=2466828Referencevia CVE List