CVE-2026-19396
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v4 Vector
Exploitability
Impact
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/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
Exploit Intelligence
Low risk: more likely to be exploited than 2% of all known CVEs.
References
Related Vulnerabilities
Other CWE-337 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-26852 | High | 8.1 | 1.2% | - | - |
| CVE-2022-40267 | Medium | 5.9 | 1.2% | - | Fix |
| CVE-2020-28597 | High | 7.5 | 1.1% | - | - |
| CVE-2026-26018 | High | 7.5 | 0.8% | - | Fix |
| CVE-2016-15006 | Low | 3.7 | 0.8% | - | Fix |
| CVE-2025-7770 | Unscored | - | 0.5% | - | - |
Common questions
How do I fix CVE-2026-19396?
No published fix for CVE-2026-19396 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-19396 being actively exploited?
Not that we know of. CVE-2026-19396 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.13% is the estimated probability that it will be exploited in the next 30 days. That is higher than 2% of all scored CVEs.
How severe is CVE-2026-19396?
CVE-2026-19396 has a CVSS v4 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2026-19396
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-07.