CVE-2026-5474
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk30th percentile - higher than 30% of all known CVEs
Summary
In NASA cFS up to version 7.0.0, a heap-based buffer overflow exists in the function CFE_MSG_GetSize in file apps/to_lab/fsw/src/to_lab_passthru_encode.c. The attacker must have local network access. The project was informed but has not responded.
Risk Assessment
An attacker on the local network can cause a system crash or potentially execute arbitrary code, compromising the integrity and availability of the cFS system.
Recommendation
Contact the NASA cFS team for a patch or apply temporary network restrictions to limit access to the vulnerable component.
Other vulnerabilities in NASA cFS
See all- CVE-2026-67979Critical
In NASA cFS v7.0.1, the Executive Services dynamic application start path component has incorrect access control. An attacker can place a shared object on target storage, allowing arbitrary code execution.
- CVE-2026-82480High
A vulnerability was discovered in NASA cFS up to 7.0.1, affecting the CFE_SB_GetUserDataLength function in cfe_sb_util.c of the cFE Software Bus component. Manipulating TotalMsgSize/HdrSize results in integer underflow. The attack can be initiated remotely, and the vendor did not respond.
- CVE-2026-82479Medium
A vulnerability was identified in NASA cFS up to 7.0.1, affecting the OS_read function in sbn_tcp_if.c of the SBN TCP Module. Manipulating the MsgSz argument leads to buffer overflow. The attack must be carried out from within the local network. The vendor did not respond.
- CVE-2026-67978High
The SBN UDP interface in NASA cFS v7.0.1 allows an attacker to cause a Denial of Service (DoS) by sending a crafted SBN frame.
- CVE-2026-67975High
Incorrect access control in NASA cFS v7.0.1 allows attackers to arbitrarily remove low-index subscriptions and add new streams via sending TO_LAB add/remove subscription commands.
- CVE-2026-67974High
A parser boundary flaw in the Software Bus Network (SBN) application's peer subscription message handling in NASA cFS v7.0.1 allows attackers to cause a Denial of Service (DoS) via sending a crafted packet.
- CVE-2026-67973High
An issue in the CFDP receive path of NASA cFS v7.0.1 allows attackers to cause a Denial of Service (DoS) via replaying final CFDP PDUs.
- CVE-2026-67970High
Incorrect access control in the DS_SetDestPathCmd() component of NASA cFS v7.0.1 allows attackers to access sensitive components via a path traversal.
- CVE-2026-67969High
An issue in the HS_MonitorApplications() component of NASA cFS v7.0.1 allows attackers to force the processor to reset via supplying a crafted HS.AppMon_Tbl entry.
- CVE-2026-67972High
An issue in the CF_CFDP_RecvMd() component of NASA cFS v7.0.1 allows attackers to control where received content and data is stored, possibly leading to an information disclosure.
Original NVD description (English source)
A vulnerability was found in NASA cFS up to 7.0.0. This affects the function CFE_MSG_GetSize of the file apps/to_lab/fsw/src/to_lab_passthru_encode.c of the component CCSDS Packet Header Handler. Performing a manipulation results in heap-based buffer overflow. The attacker must have access to the local network to execute the attack. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS