How severe is CVE-2026-102125?

CVE-2026-102125 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-102125 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-102125?

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

When was CVE-2026-102125 published?

CVE-2026-102125 was published on 2026-09-30 and last updated on 2026-10-01.

CVE-2026-102125

CVE-2026-102125 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-653.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-653
Published: 2026-09-30
Last modified: 2026-10-01

Description

The sandbox that isolates document conversion on a Kiteworks appliance did not fully confine the code running inside it. Code already executing within that sandbox could potentially escape its confinement and act with the privileges of the service account that runs the application, which could allow an attacker in that position to read or modify application data and configuration, or to disrupt the service on the affected appliance.

Frequently asked questions

What is CVE-2026-102125?: The sandbox that isolates document conversion on a Kiteworks appliance did not fully confine the code running inside it. Code already executing within that sandbox could potentially escape its confinement and act with the privileges of the service account that runs the application, which could allow an attacker in that position to read or modify application data and configuration, or to disrupt the service on the affected appliance.
How severe is CVE-2026-102125?: CVE-2026-102125 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-102125 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-102125?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-102125 published?: CVE-2026-102125 was published on 2026-09-30 and last updated on 2026-10-01.

References

Other CWE-653 vulnerabilities

CVE-2026-4692 — Critical (CVSS 10.0): Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR…
CVE-2026-63071 — Critical (CVSS 9.8): Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate…
CVE-2026-53421 — Critical (CVSS 9.8): Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate…
CVE-2026-53405 — Critical (CVSS 9.8): Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate…
CVE-2025-1974 — Critical (CVSS 9.8): A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access…
CVE-2024-33768 — Critical (CVSS 9.8): lunasvg v2.3.9 was discovered to contain a segmentation violation via the component composition_solid_source_over.

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