CVE-2025-62507: redis Input Validation Flaw — Fix

Description

Redis is an open source, in-memory database that persists on disk. In versions 8.2.0 and above, a user can run the XACKDEL command with multiple ID's and trigger a stack buffer overflow, which may potentially lead to remote code execution. This issue is fixed in version 8.2.3. To workaround this issue without patching the redis-server executable is to prevent users from executing XACKDEL operation. This can be done using ACL to restrict XACKDEL command.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-121 CWE-121

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
redis	redis	8.2.0 — 8.2.3

References

Advisories & Patches

https://github.com/redis/redis/commit/5f83972188f6e5b1d6f1940218c650a9cbdf7741 https://github.com/redis/redis/security/advisories/GHSA-jhjx-x4cf-4vm8

Other References

https://github.com/redis/redis/releases/tag/8.2.3

Frequently Asked Questions

What is CVE-2025-62507? +

Redis is an open source, in-memory database that persists on disk. In versions 8.2.0 and above, a user can run the XACKDEL command with multiple ID's and trigger a stack buffer overflow, which may potentially lead to remote code execution. This issue is fixed in version 8.2.3. To workaround this issue without patching the redis-server executable is to prevent users from executing XACKDEL operation. This can be done using ACL to restrict XACKDEL command. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-62507? +

CVE-2025-62507 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-62507? +

CVE-2025-62507 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-2025-62507? +

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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