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CVE-2025-7207

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Date: July 8, 2025

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.

Severity Score

Related Resources (10)

https://github.com/mruby/mruby/commit/1fdd96104180cc0fb5d3cb086b05ab6458911bb9
https://nvd.nist.gov/vuln/detail/CVE-2025-7207
https://github.com/mruby/mruby/issues/6509#event-17145516649
https://github.com/mruby/mruby/issues/6509
https://vuldb.com/?ctiid.315156
https://vuldb.com/?submit.607683
https://security-tracker.debian.org/tracker/CVE-2025-7207
https://vuldb.com/?id.315156
https://github.com/user-attachments/files/19619499/mruby_crash.txt
https://www.mend.io/vulnerability-database/CVE-2025-7207

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

Heap-based Buffer Overflow

CWE-122

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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