Heap-based buffer overflow in Redis - CVE-2026-25243

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Main Vulnerability Database Vulnerabilities #VU130203

Heap-based buffer overflow in Redis - CVE-2026-25243

Published: May 5, 2026


Vulnerability identifier: #VU130203
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-25243
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Redis
Software vendor:
Redis Labs

Description

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper input validation in the RESTORE command when processing a specially crafted serialized payload. A remote user can send a specially crafted serialized payload to execute arbitrary code.

Exploitation requires permission to execute the RESTORE command.


Remediation

Install security update from vendor's website.

External links