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CVE-2025-7207— mruby nregs codegen.c scope_new heap-based overflow

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.

mruby是一款Ruby语言的轻量级实现。 mruby 3.4.0-rc2及之前版本存在安全漏洞，该漏洞源于scope_new函数存在堆缓冲区溢出。

CVSS 3.3 · Low EPSS 0.24% · P14
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I. Basic Information for CVE-2025-7207

Vulnerability Information
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Vulnerability Title
mruby nregs codegen.c scope_new heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
mruby 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mruby是一款Ruby语言的轻量级实现。 mruby 3.4.0-rc2及之前版本存在安全漏洞，该漏洞源于scope_new函数存在堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- mruby 3.4.0-rc1 -

II. Public POCs for CVE-2025-7207

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III. Intelligence Information for CVE-2025-7207

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Other References for CVE-2025-7207 (1)

Same Patch Batch · n/a · 2025-07-09 · 9 CVEs total

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CVE-2025-52364 Tenda CP3 Pro 安全漏洞
CVE-2025-52357 C-Data FD602GW-DX-R410 Fiber Router 安全漏洞
CVE-2021-27961 Evasys 安全漏洞

IV. Related Vulnerabilities

Same product: mruby
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2025-7207

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