Vulnerability in Apple macOS
CVE-2025-34191
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- help.printerlogic.com/saas/Print/Security/Security-Bulletins.htm (vendor-advisory, patch, Vendor Advisory)
- pierrekim.github.io/blog/2025-04-08-vasion-printerlogic-83-vulnerabilities.html (Exploit, technical-description, Third Party Advisory, exploit)
- help.printerlogic.com/va/Print/Security/Security-Bulletins.htm (vendor-advisory, patch, Vendor Advisory)
- www.vulncheck.com/advisories/vasion-print-printerlogic-arbitrary-file-write-as-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34191?
- CVE-2025-34191 is a high-severity vulnerability in Apple macOS, classified under Improper Link Resolution Before File Access. CVSS score: 8.4/10. Published 2025-09-19.
- How severe is CVE-2025-34191?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2025-34191 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.