Vulnerability in Redis

CVE-2025-32023

Redis is an open source, in-memory database that persists on disk. From 2.8 to before 8.0.3, 7.4.5, 7.2.10, and 6.2.19, an authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. This vulnerability is fixed in 8.0.3, 7.4.5, 7.2.10, and 6.2.19. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing hyperloglog operations. This can be done using ACL to restrict HLL commands.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.042 (90.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-32023: held from 0.039 to 0.042.

EPSS over last 30 days · oldest: 0.039 · newest: 0.042 · change: +0.003

Affected products

  • Redis — versions >= 8.0.0, < 8.0.3, >= 7.4-rc1, < 7.4.5, >= 7.0.0, < 7.2.10

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-32023?
CVE-2025-32023 is a high-severity vulnerability in Redis, classified under Integer Overflow to Buffer Overflow. CVSS score: 7.0/10. Published 2025-07-07.
How severe is CVE-2025-32023?
High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2025-32023 known to be exploited?
12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.