CVE-2025-32023
CVE-2025-32023 is a high-severity vulnerability in Redis with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-680.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-20233
- Weakness: CWE-680
- Affected product: Redis
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-32023?
- CVE-2025-32023 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-32023 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-32023?
- CVE-2025-32023 affects Redis. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-32023?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-32023 have an EU (EUVD) identifier?
- Yes. CVE-2025-32023 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20233.
- When was CVE-2025-32023 published?
- CVE-2025-32023 was published on 2025-07-07 and last updated on 2026-06-17.
References
- https://github.com/redis/redis/commit/50188747cbfe43528d2719399a2a3c9599169445
- https://github.com/redis/redis/releases/tag/6.2.19
- https://github.com/redis/redis/releases/tag/7.2.10
- https://github.com/redis/redis/releases/tag/7.4.5
- https://github.com/redis/redis/releases/tag/8.0.3
- https://github.com/redis/redis/security/advisories/GHSA-rp2m-q4j6-gr43
- https://www.exploit-db.com/exploits/52477
Affected products (1)
- cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
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