What’s Vulnerable › Vulnerabilities

CVE-2025-62507: Redis: Bug in XACKDEL may lead to stack overflow and potential RCE

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-04 · updated 2026-10-19
• Weakness: CWE-20

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.

Affected products

• Redis: from 8.2.0 before 8.2.3 — fixed in 8.2.3

How to fix

Upgrade to a fixed version: Redis 8.2.3. Check the vendor advisory for mitigations.

References

• https://github.com/redis/redis/commit/5f83972188f6e5b1d6f1940218c650a9cbdf7741
• https://github.com/redis/redis/releases/tag/8.2.3
• https://github.com/redis/redis/security/advisories/GHSA-jhjx-x4cf-4vm8

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