Vulnerability · Published Nov 4, 2025 · Assigned by GitHub_M

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

High 7.7

In plain English

A high-severity improper input validation in redis from redis. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 7.5% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.7High

Exploit odds (30 days)7.5%top 5.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.23	redis	8.2.3-r0	ALPINE-CVE-2025-62507
Alpine:v3.24	redis	8.2.3-r0	ALPINE-CVE-2025-62507
Ubuntu:24.04:LTS	redis	no fix listed	UBUNTU-CVE-2025-62507
Ubuntu:25.10	redis	no fix listed	UBUNTU-CVE-2025-62507

Affected products (as reported)

Vendor	Product	Versions
redis	redis	>= 8.2.0, < 8.2.3

Weakness: CWE-20, CWE-121 · Vector: 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

References

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