CVE-2022-0614Public exploit

Memory corruption via non-Hash double-splat operand

Published Feb 16, 2022 · Updated Aug 2, 2024

Out-of-range pointer use in the mruby VM before 3.2 allows local users to corrupt memory by executing crafted Ruby code. In mrb_vm_exec, double-splat handling passes a non-Hash operand to mrb_hash_set after relying on an assertion instead of enforcing the operand type. Execution of attacker-controlled Ruby code is required, and the resulting memory corruption can compromise the interpreter process's confidentiality, integrity, and availability.

CVSS severity8.4
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-range pointer use in the mruby VM before 3.2 allows local users to corrupt memory by executing crafted Ruby code. In mrb_vm_exec, double-splat handling passes a non-Hash operand to mrb_hash_set after relying on an assertion instead of enforcing the operand type. Execution of attacker-controlled Ruby code is required, and the resulting memory corruption can compromise the interpreter process's confidentiality, integrity, and availability.

The record

CVE
CVE-2022-0614
Published
Feb 16, 2022
Updated
Aug 2, 2024
Vendor
mruby
Product
mruby
Classifications
CWE-119, CWE-823, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

mruby · mrubyversion=unspecified <3.2

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
8.4huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-823Use of Out-of-range Pointer Offset
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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