CVE-2026-26142Network attack vector

Unauthenticated code execution via untrusted deserialization

Published Jun 9, 2026 · Updated Jun 9, 2026

Deserialization of untrusted data in Microsoft PowerScribe 360 and PowerScribe One allows remote attackers to execute code. Microsoft has not published the affected component, serialization format, or operation that accepts and deserializes attacker-controlled data. No authentication or user interaction is required, and successful exploitation grants arbitrary code execution on the targeted PowerScribe system.

CVSS severity9.8
Critical
EPSS probability1.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization of untrusted data in Microsoft PowerScribe 360 and PowerScribe One allows remote attackers to execute code. Microsoft has not published the affected component, serialization format, or operation that accepts and deserializes attacker-controlled data. No authentication or user interaction is required, and successful exploitation grants arbitrary code execution on the targeted PowerScribe system.

The record

CVE
CVE-2026-26142
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Microsoft
Product
PowerScribe One
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2019.10 <2019.10.36.14
  2. Affected versionversion=2019.1 <2019.1.96.6
  3. Affected versionversion=2019.2 <2019.2.9.11
  4. Affected versionversion=2019.3 <2019.3.16.21
  5. Affected versionversion=2019.4 <2019.4.9.17
  6. Affected versionversion=2019.5 <2019.5.14.40
  7. Affected versionversion=2019.6 <2019.6.36.40
  8. Affected versionversion=2019.7 <2019.7.107.26
  9. Affected versionversion=2019.8 <2019.8.43.19
  10. Affected versionversion=2019.9 <2019.9.31.23
  11. Affected versionversion=2023.1 <2023.2.3054
  12. Affected versionversion=2023.1 <2023.3.9072

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · PowerScribe Oneversion=2019.10 <2019.10.36.14; version=2019.1 <2019.1.96.6; version=2019.2 <2019.2.9.11; version=2019.3 <2019.3.16.21; version=2019.4 <2019.4.9.17; version=2019.5 <2019.5.14.40; version=2019.6 <2019.6.36.40; version=2019.7 <2019.7.107.26; version=2019.8 <2019.8.43.19; version=2019.9 <2019.9.31.23; version=2023.1 <2023.2.3054; version=2023.1 <2023.3.9072
Microsoft · PowerScribe 360version=4.0.1 <7.0.111.68; version=4.0.2 <7.0.154.18; version=4.0.3 <7.0.197.10; version=4.0.4 <7.0.212.10; version=4.0.5 <7.0.243.19; version=4.0.6 <7.0.277.28; version=4.0 <7.0.11.49; version=4.0.7 <7.0.316.12; version=4.0.8 <7.0.427.15; version=4.0.9 <7.0.528.24

Published CVSS scores

9.8Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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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