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CVE-2025-7207 – mruby Heap-Based Buffer Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-7207 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jul. 09, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
    Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P)
    Added CWE CWE-119
    Added CWE CWE-122
    Added Reference https://github.com/mruby/mruby/commit/1fdd96104180cc0fb5d3cb086b05ab6458911bb9
    Added Reference https://github.com/mruby/mruby/issues/6509
    Added Reference https://github.com/mruby/mruby/issues/6509#event-17145516649
    Added Reference https://github.com/user-attachments/files/19619499/mruby_crash.txt
    Added Reference https://vuldb.com/?ctiid.315156
    Added Reference https://vuldb.com/?id.315156
    Added Reference https://vuldb.com/?submit.607683
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