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CVE-2024-11166Traffic Alert and Collision Avoidance System (TCAS) II has an External Control of System or Configuration Setting vulnerability

Description

For TCAS II systems using transponders compliant with MOPS earlier than RTCA DO-181F, an attacker can impersonate a ground station and issue a Comm-A Identity Request. This action can set the Sensitivity Level Control (SLC) to the lowest setting and disable the Resolution Advisory (RA), leading to a denial-of-service condition.

Timeline

  1. ID reserved

    By icscert

  2. · 2 months later

    Published

  3. · 21 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-11166, by who scored it
Scored byCVSSScoreVector
icscertCNA (assigner)4.0High7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
NVDNVD · Deferred4.0High7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.28% · top 79% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Affected products

What to do

Workaround: After consulting with the Federal Aviation Administration (FAA) and the researchers regarding these vulnerabilities, it has been concluded that CVE-2024-11166 can be fully mitigated by upgrading to ACAS X or by upgrading the associated transponder to comply with RTCA DO-181F. Currently, there is no mitigation available for CWE-2024-9310. These vulnerabilities in the TCAS II standard are exploitable in a lab environment. However, they require very specific conditions to be met and are unlikely to be exploited outside of a lab setting. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely. These vulnerabilities have a high attack complexity.

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .