CVE-2026-123999

Name of the Vulnerable Software and Affected Versions NASA JPL ION-DTN versions 3.6.2 through 4.2.0

Description A heap-based buffer overflow exists in the string-formatting logic of the Network Management daemon (nm mgr). A malicious or misconfigured agent can trigger an out-of-bounds write by sending deeply nested AMP payloads that exceed fixed-size buffer allocations via unbounded strcat() operations. This can be achieved by transmitting oversized AMP reports, tables, or macros over the UDP CLA/AMP path, or triggered locally through interactive UI rendering. Successful exploitation leads to a crash of the nm mgr daemon, resulting in a denial of service that halts telemetry collection and operator visibility.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.