What is CVE-2025-71410?

CVE-2025-71410 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-2025-71410?

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

Resource exhaustion in Atn-B1 Cpdlc

CVE-2025-71410

Unnumbered Disconnect (U DISC) and malformed Aviation Very High Frequency Link Control frames can terminate sessions and lead to a loss of CPDLC functions requiring a reversion to voice communication and increased controller workload. This type of attack can be carried out remotely over radio frequency.

Published 2026-08-07 · last modified 2026-09-29.

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.

EPSS exploit prediction

EPSS: 0.003 (25.9th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Atn-B1 Cpdlc — versions All versions

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

www.cisa.gov/news-events/ics-advisories/icsa-26-219-01 (third-party-advisory)

Frequently asked questions

What is CVE-2025-71410?: CVE-2025-71410 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-2025-71410?: Medium severity. CVSS v3 base score is 5.3 out of 10.