CVE-2025-7207
mruby nregs codegen.c scope_new heap-based overflow
MEDIUM 4.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.26 % · percentile 18 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- VulDB
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-122 — Heap-based Buffer Overflow
- CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787 — Out-of-bounds Write
References
- https://vuldb.com/?id.315156
- https://vuldb.com/?ctiid.315156
- https://vuldb.com/?submit.607683
- https://github.com/mruby/mruby/issues/6509
- https://github.com/mruby/mruby/issues/6509#event-17145516649
- https://github.com/user-attachments/files/19619499/mruby_crash.txt
- https://github.com/mruby/mruby/commit/1fdd96104180cc0fb5d3cb086b05ab6458911bb9
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | MEDIUM 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| CVSS 3.1 | LOW 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| CVSS 3.0 | LOW 3.3 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| CVSS 2.0 | LOW 1.7 | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
| CVSS 4.0 | LOW 1.9 | CVSS:4.0/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 | NVD · cna@vuldb.com (Secondary) |
| CVSS 3.1 | LOW 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L | NVD · cna@vuldb.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 1.7 | AV:L/AC:L/Au:S/C:N/I:N/A:P | NVD · cna@vuldb.com (Secondary) |
European references
- ENISA EUVD · EUVD-2025-20759
- GCVE · GCVE-0-2025-7207
CERT-FR advisories
- CERTFR-2026-AVI-0606 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mruby:mruby:*:*:*:*:*:ruby:*:*< 3.4.0cpe:2.3:a:mruby:mruby:3.4.0:rc:*:*:*:ruby:*:*cpe:2.3:a:mruby:mruby:3.4.0:rc2:*:*:*:ruby:*:*
Affected products
| Product | Versions |
|---|---|
| mruby | affected 3.4.0-rc1 ; affected 3.4.0-rc2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |