CVE-2025-34106Public exploit

Code execution via embedded JPEG buffer overflow

Published Jul 15, 2025 · Updated May 14, 2026

Buffer overflow in PDF Shaper 3.5 through 3.6 allows attackers to execute arbitrary code by converting a crafted PDF to an image. PDFTools.exe processes an embedded JPEG containing 433 bytes before an attacker-controlled SEH record and payload, overflowing its image-conversion buffer. Execution requires a user to select Convert PDF to Image for the malicious file, and the payload runs with that user's privileges.

CVSS severity8.4
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in PDF Shaper 3.5 through 3.6 allows attackers to execute arbitrary code by converting a crafted PDF to an image. PDFTools.exe processes an embedded JPEG containing 433 bytes before an attacker-controlled SEH record and payload, overflowing its image-conversion buffer. Execution requires a user to select Convert PDF to Image for the malicious file, and the payload runs with that user's privileges.

The record

CVE
CVE-2025-34106
Published
Jul 15, 2025
Updated
May 14, 2026
Vendor
Burnaware
Product
PDF Shaper
Classifications
CWE-120, CWE-119, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 14, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.5 <=3.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Burnaware · PDF Shaperversion=3.5 <=3.6

Published CVSS scores

8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1204.002Malicious File
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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