CVE-2019-19363Public exploit

SYSTEM privilege escalation via writable driver DLLs

Published Jan 24, 2020 · Updated Aug 5, 2024

Local privilege escalation in affected Ricoh Windows printer drivers allows local users to execute code as SYSTEM during printer setup. The drivers create C:\ProgramData\RICOH_DRV with inherited Everyone Full Control permissions, allowing PrintIsolationHost.exe to load attacker-replaced DLLs as SYSTEM. Exploitation requires a regular Windows account that can install an affected driver and add a printer, and successful loading is timing-sensitive.

CVSS severity7.8
High
EPSS probability4.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in affected Ricoh Windows printer drivers allows local users to execute code as SYSTEM during printer setup. The drivers create C:\ProgramData\RICOH_DRV with inherited Everyone Full Control permissions, allowing PrintIsolationHost.exe to load attacker-replaced DLLs as SYSTEM. Exploitation requires a regular Windows account that can install an affected driver and add a printer, and successful loading is timing-sensitive.

The record

CVE
CVE-2019-19363
Published
Jan 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, CAPEC-1, T1574.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8Pentagrid AGCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1574.002DLL Side-Loading

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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