CVE-2026-13385: asus router Improper Certificate Validation
Vulnerability summary
CVE-2026-13385 is a critical (CVSS 9.5) Improper Certificate Validation vulnerability in asus router. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3% of scored vulnerabilities.
Timeline
- 15-07-2026PublishedVulnerability first disclosed.
- 29-07-2026Last modifiedVulnerability information updated.
Description
An Improper Validation of Integrity Check Value and Improper Certificate Validation in certain ASUS router models allows a remote man-in-the-middle(MITM) user to make the router download and execute arbitrary command via a spoofed server. Refer to the ' Security Update for ASUS Router Firmware ' section on the ASUS Security Advisory for more information.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.5CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
0.00 pp
From 0.14% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-295Improper Certificate ValidationThe product does not validate, or incorrectly validates, a certificate.
- CWE-354Improper Validation of Integrity Check ValueThe product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.
Affected systems
Asus1 product
- router3.0.0.4_386 series | 3.0.0.4_388 series | 3.0.0.6_102 series
1 vendor · 1 product