CVE-2026-5476
MediumCVSS 4.6Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
In NASA cFS up to version 7.0.0 on 32-bit, an integer overflow vulnerability was identified in the CFE_TBL_ValidateCodecLoadSize function. The attack is difficult to execute but could lead to unexpected system behavior.
Risk Assessment
The risk involves potential disruption of the flight system, which could impact mission safety.
Recommendation
It is recommended to apply the planned patch in the upcoming project version and monitor for updates.
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 identified in NASA cFS up to 7.0.0 on 32-bit. Affected is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation leads to integer overflow. The complexity of an attack is rather high. The exploitability is told to be difficult. A fix is planned for the upcoming version milestone of the project.