What is CVE-2025-71411?

CVE-2025-71411 is a medium-severity vulnerability in Atn-B1 Cpdlc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-08-07.

How severe is CVE-2025-71411?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Atn-B1 Cpdlc

CVE-2025-71411

Broadcast control frames can disconnect multiple aircraft simultaneously leading to delayed clearances and air traffic controller overload. This type of attack can be carried out remotely over radio frequency.

EPSS: 0.002 (9.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Atn-b1 Cpdlc — versions All versions

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

ics-cert@hq.dhs.gov (third-party-advisory)

Frequently asked questions

What is CVE-2025-71411?: CVE-2025-71411 is a medium-severity vulnerability in Atn-B1 Cpdlc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-08-07.
How severe is CVE-2025-71411?: Medium severity. CVSS v3 base score is 5.3 out of 10.