How severe is CVE-2026-26142?

CVE-2026-26142 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-26142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26142?

CVE-2026-26142 primarily affects Microsoft Nuance Powerscribe 360. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-26142?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-26142 have an EU (EUVD) identifier?

Yes. CVE-2026-26142 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35530.

When was CVE-2026-26142 published?

CVE-2026-26142 was published on 2026-06-09 and last updated on 2026-06-29.

CVE-2026-26142

CVE-2026-26142 is a critical-severity vulnerability in Microsoft Nuance Powerscribe 360 with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35530
Weakness: CWE-502
Affected product: Microsoft Nuance Powerscribe 360
Published: 2026-06-09
Last modified: 2026-06-29

Description

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

Frequently asked questions

What is CVE-2026-26142?: Deserialization of untrusted data in Nuance PowerScribe allows an unauthorized attacker to execute code over a network.
How severe is CVE-2026-26142?: CVE-2026-26142 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-26142 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26142?: CVE-2026-26142 primarily affects Microsoft Nuance Powerscribe 360. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-26142?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-26142 have an EU (EUVD) identifier?: Yes. CVE-2026-26142 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35530.
When was CVE-2026-26142 published?: CVE-2026-26142 was published on 2026-06-09 and last updated on 2026-06-29.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26142

Affected products (22)

cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.4:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_360:4.0.9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.4:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2019.10:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2023.1:sp2_patch_11:*:*:*:*:*:*
cpe:2.3:a:microsoft:nuance_powerscribe_one:2023.1:sp3_patch_6:*:*:*:*:*:*

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