NASA JPL ION-DTN 2.2.1b through 4.2.0 contains an integer overflow vulnerability in the Datagram Retransmission (DGR) convergence layer that allows attackers to corrupt heap memory by sending a maliciously crafted 64-bit svcDataLength value that wraps a 32-bit allocation size calculation. Attackers can exploit the dgr_receive API's unchecked memcpy operation using synthetic datagrams or DGR traffic over internal IPC or custom transports to trigger an out-of-bounds write, leading to denial of service or potential remote code execution.
History

Wed, 11 Nov 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Nasajpl
Nasajpl iondtn
Vendors & Products Nasajpl
Nasajpl iondtn

Mon, 09 Nov 2026 19:00:00 +0000

Type Values Removed Values Added
Description NASA JPL ION-DTN 2.2.1b through 4.2.0 contains an integer overflow vulnerability in the Datagram Retransmission (DGR) convergence layer that allows attackers to corrupt heap memory by sending a maliciously crafted 64-bit svcDataLength value that wraps a 32-bit allocation size calculation. Attackers can exploit the dgr_receive API's unchecked memcpy operation using synthetic datagrams or DGR traffic over internal IPC or custom transports to trigger an out-of-bounds write, leading to denial of service or potential remote code execution.
Title ION-DTN 2.2.1b-4.2.0 Integer Overflow Heap Corruption via DGR
Weaknesses CWE-190
CWE-787
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-09T18:45:25.184Z

Updated: 2026-11-14T01:53:44.863Z

Reserved: 2026-11-06T18:38:38.543Z

Link: CVE-2026-124001

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-09T19:16:48.003

Modified: 2026-11-14T02:16:47.907

Link: CVE-2026-124001

cve-icon Redhat

No data.