# CVE-2026-48173: Samsung Semiconductor NAS message handler memory corruption

Source: https://junglewise.ai/threats/cve-2026-48173-in-the-nas-message-handler-improper-validation-of-the-length  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-05. Updated: 2026-11-05  
License: CC BY 4.0 with a link back

CVE-2026-48173 · Severity: info · Published 2026-11-05

Samsung semiconductor products contain a flaw in their NAS message handler where insufficient validation of length fields allows attackers to corrupt memory. This could lead to system instability, data corruption, or potential code execution depending on the attacked component's role in the device.

Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-48173 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48173 being exploited in the wild.

**How severe is CVE-2026-48173?** Informational severity, published 5 November 2026.

**Which products and versions are affected?** Samsung Semiconductor firmware.

**Is there a fix for CVE-2026-48173?** 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-2026-48173 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-48173?** Check whether you run Samsung Semiconductor firmware. 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 NAS message handler in Samsung semiconductor firmware improperly validates the length field in incoming NAS messages, leading to memory corruption. The vulnerability requires network access to send specially crafted NAS messages to an affected device. Successful exploitation could result in memory corruption, potentially enabling denial of service or arbitrary code execution depending on the memory region affected and the firmware's exploit mitigations.

## Affected products

- Samsung Semiconductor firmware

## Timeline

- 2026-11-05: disclosed

## References

- [https://semiconductor.samsung.com/support/quality-support/product-security-updates/](https://semiconductor.samsung.com/support/quality-support/product-security-updates/)