F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to version 4.2.0, the bounds check byteOffset + dataSize > fileSize uses U32 addition that wraps around on overflow. An attacker-crafted DataPacket with byteOffset=0xFFFFFF9C and dataSize=100 overflows to 0, bypassing the check entirely. The subsequent file write proceeds at the original ~4GB offset. Additionally, Svc/FileUplink/File.cpp:20-31 performs no sanitization on the destination file path. Combined, these allow writing arbitrary data to any file at any offset. The impact is arbitrary file write leading to remote code execution on embedded targets. Note that this is a logic bug. ASAN does not detect it because all memory accesses are within valid buffers — the corruption occurs in file I/O. Version 4.2.0 contains a patch. No known workarounds are available.
CVE-2026-41144
“—” beside the score: it is equal to NVD's CVSS score.
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4% (37th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-24577 (ENISA EUVD)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
The CVE record names the fixed release — apply it.
- CVSS v3
- 9.8
- EG Score
- 9.8CRITICALmedium confidence
- EG Risk
- 59EG Risk 59/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity98% × 45%Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.4%
- EPSS %ILE
- 37th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
April 22, 2026
Last Modified
October 26, 2026
Advisory Details (2)
Auto-updated Oct 26, 2026Integer Overflow in FileUplink (Critical) · Advisory · nasa/fprime · GitHub
https://github.com/nasa/fprime/security/advisories/GHSA-qmvv-rxh4-ccqhcommit cacdd555456b (nasa/fprime)
Fix landed in nasa/fprime commit cacdd555456b — awaiting tagged release
https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 40× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 99 of 189 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 90 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-30 00:17 UTCEG score recompute
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-28 23:21 UTCEG score recompute
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-27 22:25 UTCEG score recompute
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-26 21:27 UTCEG score recomputeFirst assessed: 9.8 CRITICAL
- 2026-10-26 21:27 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-25 14:30 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-18 03:42 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
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- 2026-10-12 16:08 UTCEG score recompute
- 2026-10-11 19:51 UTCEG score recompute
- 2026-10-11 17:04 UTCEG score recompute
- 2026-10-11 14:30 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-09 08:25 UTCOSV refresh
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 54th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-19 15:33 UTCOSV refresh
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-31 19:04 UTCOSV refresh
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-02 12:38 UTCEG score recompute
- 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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Frequently asked(5)
What is CVE-2026-41144?
When was the CVE record for CVE-2026-41144 published?
Is CVE-2026-41144 actively exploited?
What is the CVSS score of CVE-2026-41144?
How do I remediate CVE-2026-41144?
Dependency Blast Radius
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