CVE-2019-18659

5.3 mediumEPSS 1.0%

Medium (5.3) in ready wireless emergency alerts. EPSS 1.0% chance of exploitation in the next 30 days.

The Wireless Emergency Alerts (WEA) protocol allows remote attackers to spoof a Presidential Alert because cryptographic authentication is not used, as demonstrated by MessageIdentifier 4370 in LTE System Information Block 12 (aka SIB12). NOTE: testing inside an RF-isolated shield box suggested that all LTE phones are affected by design (e.g., use of Android versus iOS does not matter); testing in an open RF environment is, of course, contraindicated.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
CWE: CWE-290
Published: 2019-11-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ready:wireless_emergency_alerts

References

https://dl.acm.org/citation.cfm?id=3326082
https://dl.acm.org/citation.cfm?id=3326082

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