CVE-2026-25243Network attack vector

Authenticated code execution via malformed RESTORE payload

Published May 5, 2026 · Updated May 5, 2026

Invalid memory access in Redis allows remote authenticated users to execute code through a crafted RESTORE serialized payload. The RESTORE deserialization path insufficiently validates serialized values, producing double-free, integer-overflow, or out-of-bounds heap states. Access requires authentication and ACL permission for RESTORE; successful exploitation runs code in the redis-server context and can expose data or interrupt service.

CVSS severity7.7
High
EPSS probability3.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid memory access in Redis allows remote authenticated users to execute code through a crafted RESTORE serialized payload. The RESTORE deserialization path insufficiently validates serialized values, producing double-free, integer-overflow, or out-of-bounds heap states. Access requires authentication and ACL permission for RESTORE; successful exploitation runs code in the redis-server context and can expose data or interrupt service.

The record

CVE
CVE-2026-25243
Published
May 5, 2026
Updated
May 5, 2026
Vendor
Redis
Product
Redis
Classifications
CWE-20, CWE-122, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 8.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Redis · Redisversion=< 8.6.3

Published CVSS scores

7.7RedisCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-122Heap-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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