[Control Systems] Moxa security advisory (AV26-938)
Canada's Cyber Centre (AV26-938) warns of out-of-bounds write flaw CVE-2026-15579 in Moxa TN-4500B Series Ethernet switches at or below v2.0.
The Canadian Centre for Cyber Security issued advisory AV26-938 for an out-of-bounds write vulnerability, CVE-2026-15579, affecting Moxa TN-4500B Series industrial Ethernet switches prior to or equal to version 2.0. Administrators are encouraged to review the linked Moxa security advisory and apply updates as they become available. No exploitation activity is reported.
- CVE-2026-15579 is an out-of-bounds write flaw in Moxa TN-4500B Series switches
- Affects versions prior to or equal to v2.0
- Cyber Centre urges administrators to review vendor guidance and apply updates
- CVEs
- CVE-2026-15579
- Vendors
- Moxa
- Products
- TN-4500B Series
- Organizations
- Canadian Centre for Cyber Security
- Countries
- Canada
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-15579 | Out-of-Bounds Write in Moxa Ethernet Switch Web Login Enables DoS | 8.8 | — |
From the original article
1 min read at cyber.gc.ca
Serial number: AV26-938 Date: September 18, 2026 As of September 18, 2026, Moxa is affected by a vulnerability in the following product: TN-4500B Series Prior to or equal to v2. 0 The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. CVE-2026-15579: Out-of-bounds Write Vulnerability in Ethernet Switch Moxa Security Advisory
cyber.gc.ca
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