Security Resilience

CVE-2023-25155

Memory Safety in Redis ≤ 6.0.18

Memory Safety
Published
02 March 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0090 59th percentile
Risk Priority 50 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-25155 is a medium-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Redis Redis. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique LSA Secrets (T1003.004); ranked in the top 41% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

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 in-memory database that persists on disk and is affected by CVE-2023-25155, an integer overflow vulnerability (CWE-190) present in all versions. The issue manifests when authenticated users issue specially crafted SRANDMEMBER, ZRANDMEMBER, or HRANDFIELD commands, triggering a runtime assertion that terminates the Redis server process. The vulnerability carries a CVSS score of 5.5, reflecting local access requirements with low attack complexity and privileges but high impact on availability.

Authenticated users with the ability to execute the affected commands can exploit this flaw to cause a denial of service by crashing the Redis instance. Because the attack requires authentication and local vector per the CVSS metrics, it is typically limited to insiders or compromised accounts rather than remote unauthenticated attackers.

Advisories and patches released by the Redis project recommend upgrading to versions 6.0.18, 6.2.11, or 7.0.9, which contain fixes for the integer overflow. The corresponding commits and release notes are available in the project's GitHub repository, along with a detailed security advisory.

The exploitation probability remains low, with an EPSS score peaking at approximately 0.06, indicating limited observed interest in active exploitation following disclosure.

EU & UK References

Vulnerability Data

Redis is an in-memory database that persists on disk. Authenticated users issuing specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. This problem affects all…

more

Redis versions. Patches were released in Redis version(s) 6.0.18, 6.2.11 and 7.0.9.

CWE(s)
CWE-190

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-22458Same product: Redis Redis
CVE-2025-46817Same product: Redis Redis
CVE-2025-46819Same product: Redis Redis
CVE-2025-32023Same product: Redis Redis
CVE-2026-23479Same product: Redis Redis
CVE-2026-23631Same product: Redis Redis
CVE-2025-27151Same product: Redis Redis
CVE-2024-31449Same product: Redis Redis
CVE-2025-62507Same product: Redis Redis
CVE-2026-25243Same product: Redis Redis

Affected Assets

redis
redis
≤ 6.0.18 · 6.2.0 — 6.2.11 · 7.0.0 — 7.0.9

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.6

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 partial match
blocks

Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

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.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References