# CVE-2026-49201 — Acer Wave 7 router

> As of 2026-05-29, CVE-2026-49201 is a Critical-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Acer Wave 7 router, CVSS v4.0 10, EPSS 0.3% (21.9th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-49201, most recently “Acer Wave 7 Mesh Routers — Max-Severity Unauthenticated Zero-Days CVE-2026-49200 (Cleartext Credential Disclosure) & CVE-2026-49201 (Hardcoded AES Key Backdoor)”.

**Last updated:** 2026-05-29

## What is CVE-2026-49201?

The upload.cgi binary, responsible for processing device backups, contains a hardcoded AES encryption key. This allows an attacker to decrypt, modify, and re-encrypt system backups, facilitating persistent backdoor injection.

The record classifies CVE-2026-49201 under weakness class [CWE-798](https://intel.threadlinqs.com/cwe/CWE-798). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 152 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 10 — Critical (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 21.9% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-05-29

## Is CVE-2026-49201 being exploited?

It currently carries a trending score of 10 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Acer**: Wave 7 router

## How to fix CVE-2026-49201

No vendor patch reference has been recorded for CVE-2026-49201 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-49201

1 tracked threat in the Threadlinqs corpus references CVE-2026-49201, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Acer Wave 7 Mesh Routers — Max-Severity Unauthenticated Zero-Days CVE-2026-49200 (Cleartext Credential Disclosure) & CVE-2026-49201 (Hardcoded AES Key Backdoor)](https://intel.threadlinqs.com/threat/TL-2026-0674) — CRITICAL · 2026-06-03

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [community.acer.com](https://community.acer.com/en/kb/articles/19673)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-49201
Full detection coverage and IOCs for threats exploiting CVE-2026-49201 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp