Review reviewCritical

CVE-2026-26142

Microsoft Nuance PowerScribe 360 4.0, Nuance PowerScribe 360 version 4.0.1, Nuance PowerScribe 360 version 4.0.2

Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.91%

Technical severityCVSS 9.8

Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.

Product: Microsoft Nuance PowerScribe 360 4.0, Nuance PowerScribe 360 version 4.0.1, Nuance PowerScribe 360 version 4.0.2
Affected versions: >= 4.0 < 7.0.11.49, >= 4.0.1 < 7.0.111.68, >= 4.0.2 < 7.0.154.18, >= 4.0.3 < 7.0.197.10, >= 4.0.4 < 7.0.212.10, >= 4.0.5 < 7.0.243.19, >= 4.0.6 < 7.0.277.28, >= 4.0.7 < 7.0.316.12, >= 4.0.8 < 7.0.427.15, >= 4.0.9 < 7.0.528.24, >= 2019.1 < 2019.1.96.6, >= 2019.10 < 2019.10.36.14, >= 2019.2 < 2019.2.9.11, >= 2019.3 < 2019.3.16.21, >= 2019.4 < 2019.4.9.17, >= 2019.5 < 2019.5.14.40, >= 2019.6 < 2019.6.36.40, >= 2019.7 < 2019.7.107.26, >= 2019.8 < 2019.8.43.19, >= 2019.9 < 2019.9.31.23
Fixed versions: No verified fixed-version field is available yet

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Nuance PowerScribe 360 4.0, Nuance PowerScribe 360 version 4.0.1, Nuance PowerScribe 360 version 4.0.2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.