F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion
CVSS score
6.5
EPSS probability
%0.4
Risk score
0.0
Published
4 d ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%63
Short explanation
CVE-2026-92157 in F´ (F Prime) prior to version 4.3.0 affects the Svc::FileDownlink SendPartial range validation due to unchecked arithmetic. This integer overflow can trigger reachable assertions during data-packet transitions, causing process aborts or resets and resulting in denial of service.
This vulnerability impacts F´ framework applications used in spaceflight and embedded systems. An integer overflow triggered via the SendPartial command can lead to unexpected service interruptions and process termination.
What should be done?
- Update the F´ framework to version 4.3.0 or later
- Follow vendor security advisories
- Apply the corresponding commit patches
Chain of evidence and sources
F´ sürümlerinde 4.3.0 öncesinde, Svc::FileDownlink SendPartial aralık doğrulaması tamsayı taşmasına karşı savunmasızdır.
SendPartial komutu ile gönderilen uzunluk ve ofset değerlerinin toplamı dosya boyutunun altına sarıldığında süreç sonlandırma veya sıfırlama tetiklenir.
Bu güvenlik açığı F´ 4.3.0 sürümünde giderilmiştir.
Show the technical text from the sources
F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because unchecked startOffset plus length arithmetic bypasses the range check and stores a wrapped m_endOffset that is inconsistent with m_byteOffset. When an existing source file is larger than a valid startOffset and a SendPartial command supplies a length whose U32 sum with that offset wraps below the file size, under standard F Prime assertion handling, the first data-packet transition reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-190, CWE-617
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-92157 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | nasa | fprime | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD |
| 6.5 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-92157 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-92157 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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