CVE-2025-27151: redis Input Validation Flaw — Fix

Description

Redis is an open source, in-memory database that persists on disk. In versions starting from 7.0.0 to before 8.0.2, a stack-based buffer overflow exists in redis-check-aof due to the use of memcpy with strlen(filepath) when copying a user-supplied file path into a fixed-size stack buffer. This allows an attacker to overflow the stack and potentially achieve code execution. This issue has been patched in version 8.0.2.

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CVSS v3.1 Score

4.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
redis	redis	7.0.0 — 7.2.9
redis	redis	7.4.0 — 7.4.4
redis	redis	8.0.0 — 8.0.2

References

Advisories & Patches

https://github.com/redis/redis/commit/643b5db235cb82508e72f11c7b4bbfc7dc39be56

Other References

https://github.com/redis/redis/releases/tag/8.0.2 https://github.com/redis/redis/security/advisories/GHSA-5453-q98w-cmvm

Frequently Asked Questions

What is CVE-2025-27151? +

Redis is an open source, in-memory database that persists on disk. In versions starting from 7.0.0 to before 8.0.2, a stack-based buffer overflow exists in redis-check-aof due to the use of memcpy with strlen(filepath) when copying a user-supplied file path into a fixed-size stack buffer. This allows an attacker to overflow the stack and potentially achieve code execution. This issue has been patched in version 8.0.2. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2025-27151? +

CVE-2025-27151 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-27151? +

CVE-2025-27151 affects products from redis, specifically: redis. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-27151? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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