CVE-2025-34194Public exploit

Local privilege escalation via temporary-file link following

Published Sep 19, 2025 · Updated Sep 19, 2025

Insecure temporary-file handling in Vasion Print Host before 25.1.102 and Application before 25.1.1413 allows local users to gain SYSTEM access. PrinterInstallerClient writes as NT AUTHORITY\SYSTEM beneath the user-controlled AppData\Local\Temp directory and follows attacker-placed symbolic links to arbitrary files. A local unprivileged account can overwrite or create files with SYSTEM authority, enabling configuration or binary replacement.

CVSS severity8.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure temporary-file handling in Vasion Print Host before 25.1.102 and Application before 25.1.1413 allows local users to gain SYSTEM access. PrinterInstallerClient writes as NT AUTHORITY\SYSTEM beneath the user-controlled AppData\Local\Temp directory and follows attacker-placed symbolic links to arbitrary files. A local unprivileged account can overwrite or create files with SYSTEM authority, enabling configuration or binary replacement.

The record

CVE
CVE-2025-34194
Published
Sep 19, 2025
Updated
Sep 19, 2025
Vendor
Vasion
Product
Vasion Print Application
Classifications
CWE-377, CWE-59, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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?

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  1. Affected versionversion=*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Vasion · Vasion Print Applicationversion=*
Vasion · Vasion Print Virtual Appliance Hostversion=*

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-377Insecure Temporary File
CWE-59Improper Link Resolution Before File Access ('Link Following')
T1068Exploitation for Privilege Escalation

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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