CVE-2025-7207

low-risk
Published 2025-07-09

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.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (3)

Affected Vendors

Mruby

References (8)

Patch https://github.com/mruby/mruby/commit/1fdd96104180cc0fb5d3cb086b05ab6458911bb9
Exploit https://github.com/mruby/mruby/issues/6509
Exploit https://github.com/mruby/mruby/issues/6509#event-17145516649
Exploit https://github.com/user-attachments/files/19619499/mruby_crash.txt
Permissions Required https://vuldb.com/?ctiid.315156
Third Party Advisory https://vuldb.com/?id.315156
Third Party Advisory https://vuldb.com/?submit.607683
Exploit https://github.com/mruby/mruby/issues/6509
22
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 9/34 · Low