What is CVE-2025-71413?

CVE-2025-71413 is a medium-severity vulnerability in Atn-B1 Cpdlc, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2026-08-07.

How severe is CVE-2025-71413?

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

Vulnerability in Atn-B1 Cpdlc

CVE-2025-71413

Malformed or out-of-sequence frames at the Aviation Very High Frequency Link Control X.25 layers cause repeated resets which may result in increased workload and reduced situational awareness. 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-754 — Improper Check for Unusual or Exceptional Conditions

References

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

Frequently asked questions

What is CVE-2025-71413?: CVE-2025-71413 is a medium-severity vulnerability in Atn-B1 Cpdlc, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2026-08-07.
How severe is CVE-2025-71413?: Medium severity. CVSS v3 base score is 5.3 out of 10.