# CVE-2026-66085: Unisoc modem information disclosure in crash dumps

Source: https://junglewise.ai/threats/cve-2026-66085-in-modem-there-is-a-possible-information-disclosure-due-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-66085 · Severity: medium · CVSS 5.5 · Published 2026-10-12

Unisoc modem chipsets used in mobile devices fail to filter sensitive data from crash dump files. A local attacker with basic privileges can read these dumps to extract confidential information such as encryption keys or credentials, compromising device security without requiring special access levels.

Vendors: [Unisoc](https://junglewise.ai/threats/vendors/unisoc).

## Quick answers

**Is CVE-2026-66085 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-66085 being exploited in the wild.

**How severe is CVE-2026-66085?** Medium severity, with a CVSS score of 5.5, published 12 October 2026.

**Which products and versions are affected?** Unisoc T8100 modem chipset; Unisoc T9100 modem chipset; Unisoc T8300 modem chipset.

**Is there a fix for CVE-2026-66085?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-66085 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-66085?** Check whether you run Unisoc T8100 modem chipset, Unisoc T8300 modem chipset or Unisoc T9100 modem chipset. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The modem firmware lacks proper sanitization of sensitive data before writing crash dumps to storage, allowing an authenticated local attacker to retrieve unfiltered information via CWE-20 (Improper Input Validation). The vulnerability requires local access and user-level privileges, exposing confidential data in the confidentiality domain. No remote exploitation path exists.

## Affected products

- Unisoc T8100 modem chipset
- Unisoc T9100 modem chipset
- Unisoc T8300 modem chipset

## Timeline

- 2026-10-12: disclosed

## References

- [https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641](https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641)