CVE-2025-50360Public exploit

Code execution via unchecked compiler scope indexing

Published Dec 3, 2025 · Updated Dec 3, 2025

Heap buffer overflow in Pepper 0.1.1 and earlier allows local users to execute arbitrary code or crash the interpreter via a crafted .pr file. The add_constant function writes parsed numeric constants beyond the fixed 64-entry compiler.scopes array without enforcing its capacity. Execution of a source file containing at least 65 numeric constants triggers an out-of-bounds heap write in the Pepper process.

CVSS severity8.4
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Pepper 0.1.1 and earlier allows local users to execute arbitrary code or crash the interpreter via a crafted .pr file. The add_constant function writes parsed numeric constants beyond the fixed 64-entry compiler.scopes array without enforcing its capacity. Execution of a source file containing at least 65 numeric constants triggers an out-of-bounds heap write in the Pepper process.

The record

CVE
CVE-2025-50360
Published
Dec 3, 2025
Updated
Dec 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-122, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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