CVE-2026-19396

Predictable PRNG Seed Enables Unauthenticated Control of ASUS Router Settings

Published Oct 7, 2026 CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Description
A predictable seed in the pseudo-random number generator (PRNG) in the IFTTT pairing token generation of the ASUS RT-BE57 router allows an unauthenticated nearby user to derive the pairing token and read or modify router settings via observed values from an administrator-initiated IFTTT pairing session.Refer to the ' Security Update for ASUS Router Firmware  ' section on the ASUS Security Advisory for more information.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Predictable PRNG Seed Enables Unauthenticated Control of ASUS Router Settings
Type Values Removed Values Added
Description A predictable seed in the pseudo-random number generator (PRNG) in the IFTTT pairing token generation of the ASUS RT-BE57 router allows an unauthenticated nearby user to derive the pairing token and read or modify router settings via observed values from an administrator-initiated IFTTT pairing session.Refer to the ' Security Update for ASUS Router Firmware  ' section on the ASUS Security Advisory for more information.
First Time appeared Asus
Asus router
Weaknesses CWE-337
CPEs cpe:2.3:a:asus:router:3.0.0.6_102_series:*:*:*:*:*:*:*
Vendors & Products Asus
Asus router
References
Metrics cvssV4_0

{'score': 7.7, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ASUS
Published
Updated
Oct 7, 2026, 6:38 PM
Reserved
Aug 10, 2026, 7:25 AM
Status
Deferred
Published
Oct 7, 2026, 2:16 AM
Modified
Oct 7, 2026, 7:17 PM