Buffer overflow in Linksys E8450
CVE-2026-120283
A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hidden_timezone leads to stack-based buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Linksys E8450 — versions 1.2.00.360516
Weakness classification (CWE)
References
- vuldb.com/cve/CVE-2026-120283 (third-party-advisory)
- vuldb.com/submit/1014924 (third-party-advisory)
- vuldb.com/vuln/429627 (technical-description, vdb-entry)
- vuldb.com/vuln/429627/cti (signature, permissions-required)
- www.linksys.com/ (product)
Frequently asked questions
- What is CVE-2026-120283?
- CVE-2026-120283 is a critical-severity vulnerability in Linksys E8450, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-11-02.
- How severe is CVE-2026-120283?
- Critical severity. CVSS v3 base score is 10.0 out of 10.