CVE-2026-82480
HighCVSS 7.4Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
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.
Risk Assessment
The risk includes remote integer underflow, potentially leading to unexpected system behavior or buffer overflow.
Recommendation
It is recommended to apply available patches or updates from the vendor, and if not available, restrict access to the system and monitor logs.
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-2026-82479Medium
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.
- CVE-2026-5476Medium
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.
Original NVD description (English source)
A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c of the component cFE Software Bus. Performing a manipulation of the argument TotalMsgSize/HdrSize results in integer underflow. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.