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CVE-2022-4996— mruby bigint.c udiv floating point comparison with incorrect operator

Quick assessment

Affected
n/a mruby
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 mruby 3.1.0 中发现了一个安全漏洞。该漏洞影响 文件中的 函数。通过执行特定的恶意操作，可导致浮点数比较时使用错误的运算符。该漏洞可以被远程利用，且相关攻击代码已被公开，可能被用于实际攻击。建议及时应用补丁以修复此问题。

CVSS 5.3 · Medium EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a mruby 3.1.0 affected
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I. Basic Information for CVE-2022-4996

Vulnerability Information
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Vulnerability Title
mruby bigint.c udiv floating point comparison with incorrect operator
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to apply a patch to resolve this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确的比较运算符比较浮点值
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- mruby 3.1.0 cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2022-4996

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III. Intelligence Information for CVE-2022-4996

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Vendor Advisories for CVE-2022-4996 (1)

Same Patch Batch · n/a · 2026-08-19 · 7 CVEs total

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IV. Related Vulnerabilities

Same product: mruby
Same vendor: n/a
Same weakness: CWE-1077

V. Comments for CVE-2022-4996

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