Vulnerability · Published Aug 7, 2026 · Assigned by icscert

CVE-2025-71410Malicious Link Control Frames Can Cause Loss of CPDLC Functions

Medium 5.3

In plain English

A medium-severity resource allocation without limits in CPDLC from ATN-B1. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 74.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
ATN-B1	CPDLC	All versions

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

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