Cyber Resilience

CVE-2025-32023

Redis 2.8.0 – 6.2.19

Public PoC
Published
07 July 2025
Modified
17 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 7.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.040 90th percentile
Risk Priority 63 floored blend · peak EPSS

Summary

CVE-2025-32023 is a high-severity Integer Overflow to Buffer Overflow (CWE-680) vulnerability in Redis Redis. Its CVSS base score is 7.0 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 10% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Redis is an open source in-memory database that persists on disk. CVE-2025-32023 is a stack/heap out-of-bounds write in hyperloglog operations that affects all versions from 2.8 through 8.0.2, 7.4.4, 7.2.9, and 6.2.18. An authenticated user who can supply a specially crafted string can trigger the flaw, which is tracked as CWE-680 and carries a CVSS 3.1 score of 7.0.

Because the attack requires local access and an existing authenticated session, a successful exploit can result in remote code execution on the Redis server. The issue is believed to affect every Redis release that implements hyperloglog commands.

Patches are available in Redis 8.0.3, 7.4.5, 7.2.10, and 6.2.19. The project also documents an ACL-based workaround that blocks all HLL commands without requiring a server binary update. The associated GitHub commits and release tags confirm the fixes and the command-restriction mitigation.

EU & UK References

Vulnerability Data

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,…

more

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.

CWE(s)
CWE-680

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-23479Same product: Redis Redis
CVE-2026-23631Same product: Redis Redis
CVE-2026-25243Same product: Redis Redis
CVE-2025-27151Same product: Redis Redis
CVE-2025-46819Same product: Redis Redis
CVE-2024-31449Same product: Redis Redis
CVE-2023-25155Same product: Redis Redis
CVE-2025-46817Same product: Redis Redis
CVE-2023-22458Same product: Redis Redis
CVE-2024-31227Same product: Redis Redis

Affected Assets

redis
redis
2.8.0 — 6.2.19 · 7.2.0 — 7.2.10 · 7.4.0 — 7.4.5

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and analysis (static, dynamic, fuzzing) finds integer-overflow-to-allocation defects before deployment.

SA-15 Development Process, Standards, and Tools partial match

Mandates documented development standards and tools that enforce secure coding rules against unsafe integer arithmetic.

SA-8 Security and Privacy Engineering Principles partial match

Requires engineering principles such as safe arithmetic and bounds-checked allocation that directly stop integer overflow during memory-size computation.

SI-10 Information Input Validation partial match

Validates untrusted size/offset inputs before they reach allocation calculations, structurally blocking the integer overflow path.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent integer-overflow flaws during development, but eliminating only this CWE covers only part of the broad control intent.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect integer-overflow-to-buffer-overflow conditions during development.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates practices that can catch integer overflows before deployment.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify safe integer handling and bounds checking.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage use of safe arithmetic libraries and overflow detection.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require prevention of integer overflows that lead to buffer overflows.

References