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CVE-2026-25243

42
FAUCET Score

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.

First published: May 5, 2026Last modified: May 6, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 8.6.3CPE matchmatch criteria
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.7HIGH

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
3.00%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0300 is in the 85th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

microsoft2026-May/CVE-2026-25243Important

redis-server RESTORE invalid memory access may allow remote code execution

May 7, 2026

References

access.redhat.com / errata/RHSA-2026:14316
access.redhat.com / errata/RHSA-2026:23229
access.redhat.com / errata/RHSA-2026:25216
access.redhat.com / errata/RHSA-2026:25219
access.redhat.com / errata/RHSA-2026:25925
access.redhat.com / errata/RHSA-2026:26008
access.redhat.com / errata/RHSA-2026:26233
access.redhat.com / errata/RHSA-2026:26306
access.redhat.com / errata/RHSA-2026:26540
access.redhat.com / errata/RHSA-2026:27716
access.redhat.com / errata/RHSA-2026:27787
access.redhat.com / errata/RHSA-2026:28139
access.redhat.com / errata/RHSA-2026:28142
access.redhat.com / errata/RHSA-2026:29817
access.redhat.com / errata/RHSA-2026:33427
access.redhat.com / security/cve/CVE-2026-25243
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-25243.json
github.com / redis/redis/releases/tag/8.6.3
Release Notes
github.com / redis/redis/security/advisories/GHSA-c8h9-259x-jff4
MitigationVendor Advisory