Cyber Resilience

CVE-2023-22458

Memory Safety in Redis 6.2.0 – 6.2.9

High EPSSMemory Safety
Published
20 January 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 0.72 99.4th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2023-22458 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 Exploitation for Privilege Escalation (T1068); ranked in the top 0.6% 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. The vulnerability is an integer overflow (CWE-190) that allows an authenticated user to supply specially crafted arguments to the HRANDFIELD or ZRANDMEMBER commands, triggering an assertion failure that crashes the server. It affects Redis versions 6.2.0 up to but not including 6.2.9 and versions 7.0.0 up to but not including 7.0.8.

An attacker with a valid low-privileged local account on the Redis host can execute these commands to cause a denial of service that renders the database unavailable. The CVSS 5.5 vector reflects local access, low attack complexity, and high impact on availability with no effect on confidentiality or integrity.

The official Redis advisories and release notes for versions 6.2.9 and 7.0.8 state that users should upgrade immediately; the commits that correct the integer handling are included in those releases, and no workarounds are documented.

The EPSS score rose from a low baseline to a peak of 0.6777 (current value 0.5124), indicating that exploitation interest increased after disclosure and that the issue merits renewed attention.

EU & UK References

Vulnerability Data

Redis is an in-memory database that persists on disk. Authenticated users can issue a `HRANDFIELD` or `ZRANDMEMBER` command with specially crafted arguments to trigger a denial-of-service by crashing Redis with an assertion failure. This problem affects Redis versions 6.2 or…

more

newer up to but not including 6.2.9 as well as versions 7.0 up to but not including 7.0.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CWE(s)
CWE-190

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 →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-46817Same product: Redis Redis
CVE-2023-25155Same product: Redis Redis
CVE-2025-46819Same product: Redis Redis
CVE-2026-23479Same product: Redis Redis
CVE-2026-25243Same product: Redis Redis
CVE-2025-32023Same product: Redis Redis
CVE-2026-23631Same product: Redis Redis
CVE-2024-31227Same product: Redis Redis
CVE-2024-51741Same product: Redis Redis
CVE-2025-27151Same product: Redis Redis

Affected Assets

redis
redis
6.2.0 — 6.2.9 · 7.0.0 — 7.0.8

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 mostly match
prevents

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect integer overflows before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and arithmetic checks that prevent integer overflows.

A.8.26 Application security requirements partial match
degrades

Application security requirements include bounds checking and safe arithmetic to avoid overflow conditions.

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

Secure architecture principles require defensive coding patterns that mitigate integer wraparound risks.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe integer operations and mandate overflow-safe constructs.

References