CVE-2025-62507 Redis: Bug in XACKDEL may lead to stack overflow and potential RCE
A stack buffer overflow in Redis XACKDEL command allows remote attackers to potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62507?
CVE-2025-62507 is a high-severity memory corruption vulnerability in redis, published on 4 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-62507?
2 open source packages ship an affected version, including redis and keydb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
redis Bitnami | From 8.2.0 | 8.2.3 |
keydb Bitnami | From 8.2.0 | 8.2.3 |
Linux distribution packages (1)
redis openSUSE:Tumbleweed | All versions | 8.2.3-1.1 |
Products include Redis Redis.
How do I fix CVE-2025-62507?
Upgrade redis to 8.2.3 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-62507 being exploited?
There is no known exploitation of CVE-2025-62507 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in redis
- CVE-2022-0543 Debian-specific Redis Server Lua Sandbox Escape
- CVE-2026-23479 redis-server use-after-free in unblock client flow may allow remote code execution
- CVE-2026-25243 redis-server RESTORE invalid memory access may allow remote code execution
- CVE-2025-48367 Redis DoS Vulnerability due to bad connection error handling
- CVE-2023-31655 Denial of service in n/a
Sources
Also known as BELL-CVE-2025-62507, BIT-keydb-2025-62507, BIT-redis-2025-62507, GHSA-jhjx-x4cf-4vm8, MINI-mfjf-rjj4-v6w5, openSUSE-SU-2025:15698-1.