CVE-2025-67432Public exploitNetwork attack vector

Process crash via unchecked stack allocation

Published Feb 12, 2026 · Updated Feb 12, 2026

Stack overflow in Monkeybread Software MBS DynaPDF Plugin 21.3.1.1 allows attackers to crash the host process via crafted barcode input. ZBarcode_Encode passes the caller-supplied length to an internal dispatcher that performs alloca(length + 1) without checking available stack space. Exploitation requires a large length value to reach the exported function; remote reachability exists only when a server-side application exposes barcode generation, and the resulting impact is process termination.

CVSS severity7.5
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Monkeybread Software MBS DynaPDF Plugin 21.3.1.1 allows attackers to crash the host process via crafted barcode input. ZBarcode_Encode passes the caller-supplied length to an internal dispatcher that performs alloca(length + 1) without checking available stack space. Exploitation requires a large length value to reach the exported function; remote reachability exists only when a server-side application exposes barcode generation, and the resulting impact is process termination.

The record

CVE
CVE-2025-67432
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2026Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

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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