Command execution via spoofed update server
Published Jul 15, 2026 · Updated Jul 15, 2026
Improper update validation in ASUS Router firmware allows man-in-the-middle attackers to execute commands through a spoofed server. The update path accepts a spoofed server because it improperly validates certificates and integrity values, then downloads and executes an attacker-supplied command. Exploitation requires interception of the router's network traffic; successful attacks run arbitrary commands without prior authentication.
Summary
What happened
Improper update validation in ASUS Router firmware allows man-in-the-middle attackers to execute commands through a spoofed server. The update path accepts a spoofed server because it improperly validates certificates and integrity values, then downloads and executes an attacker-supplied command. Exploitation requires interception of the router's network traffic; successful attacks run arbitrary commands without prior authentication.
The record
- CVE
- CVE-2026-13385
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Vendor
- ASUSTeK Computer Inc.
- Product
- ASUS Router
- Classifications
- CWE-354, CWE-295, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 15, 2026CVE publishedPublication date reported by the CVE source.
- Jul 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.0.0.4_386 series
- Affected versionversion=3.0.0.4_388 series
- Affected versionversion=3.0.0.6_102 series
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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