CVE-2022-25478Public exploit

PCI configuration access via exposed IOCTLs

Published Jul 2, 2024 · Updated Jul 9, 2026

Improper access control in Realtek RtsPer and RtsUer card-reader drivers allows local users to read and write PCI configuration space. The publicly accessible device object exposes IOCTL 0x2D2190 and 0x2D2194 as wrappers for PCI bus-interface reads and writes. RtsPer.sys before 10.0.22000.21355 and RtsUer.sys before 10.0.22000.31274 are affected; low-privileged access permits BAR corruption that produces an interrupt storm and makes Windows unusable.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Realtek RtsPer and RtsUer card-reader drivers allows local users to read and write PCI configuration space. The publicly accessible device object exposes IOCTL 0x2D2190 and 0x2D2194 as wrappers for PCI bus-interface reads and writes. RtsPer.sys before 10.0.22000.21355 and RtsUer.sys before 10.0.22000.31274 are affected; low-privileged access permits BAR corruption that produces an interrupt storm and makes Windows unusable.

The record

CVE
CVE-2022-25478
Published
Jul 2, 2024
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.001OS Exhaustion Flood

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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