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