CVE-2025-34191: Vasion Print Virtual Appliance Host · Improper Link Following
Affects Vasion Print Virtual Appliance HostSource CVE Database V5
Not known to be exploited · CVSS 8.5 High.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 19 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Vasion Print Virtual Appliance Host | Affected
| Fixed in– |
AI-suggested
Until an official fix is available, restrict local user access to the affected directories and monitor for suspicious symbolic link creation. Avoid running the service with root privileges if possible.
Description
Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 22.0.843 and Application prior to 20.0.1923 (macOS/Linux client deployments) contain an arbitrary file write vulnerability via the response file handling. When tasks produce output the service writes response data into files under /opt/PrinterInstallerClient/tmp/responses/ reusing the requested filename. The service follows symbolic links in the responses directory and writes as the service user (typically root), allowing a local, unprivileged user to cause the service to overwrite or create arbitrary files on the filesystem as root. This can be used to modify configuration files, replace or inject binaries or drivers, and otherwise achieve local privilege escalation and full system compromise. This vulnerability has been identified by the vendor as: V-2023-019 — Arbitrary File Write as Root.
References
- help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm (opens in a new tab)
- pierrekim.github.io/blog/2025-04-08-vasion-printerlogic-83-vulnerabilities.html (opens in a new tab)
- help.printerlogic.com/va/Print/Security/Security-Bulletins.htm (opens in a new tab)
- vulncheck.com/advisories/vasion-print-printerlogic-arbitrary-file-write-as-root-via-response-path-symlink-follow (opens in a new tab)