CVE-2025-12875

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.8% of scored records. A rank, not a probability.

NVD base score

1.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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 analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-11-07 20:32Z11 MO AGO

Last updated

2026-02-24 06:25Z8 MO AGO

Reserved

2025-11-07

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

f72d17fb3b0b1668ade97ceb9a45cfe22bb6b4de0c9d38553b4adf1d1ba1a7d1

• vuldb.comVDB-331511 | mruby array.c ary_fill_exec out-of-bounds writehttps://vuldb.com/?id.331511vdb-entrytechnical-description
• vuldb.comVDB-331511 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/?ctiid.331511signaturepermissions-required
• vuldb.comSubmit #680879 | mruby 3.4.0 Out-of-bounds Writehttps://vuldb.com/?submit.680879third-party-advisory
• github.comhttps://github.com/mruby/mruby/issues/6650issue-tracking
• github.comhttps://github.com/mruby/mruby/issues/6650#event-20443453808issue-tracking
• github.comhttps://github.com/mruby/mruby/issues/6650#issuecomment-3430851605exploitissue-tracking
• github.comhttps://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94patch
• github.comhttps://github.com/mruby/mruby/product