CVE-2026-41144

UNRATEDCVSS · not yet scored
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
—
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

April 22, 2026

Last Modified

May 21, 2026

References (2)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 147 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-19 15:33 UTCOSV refresh
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 19:31 UTCEPSS rescore
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  19. 2026-08-31 19:04 UTCOSV refresh
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  1. 2026-08-23 00:19 UTCEPSS rescore
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  21. 2026-08-02 12:38 UTCEG score recompute
  22. 2026-08-02 02:27 UTCEPSS rescore
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  33. 2026-07-23 03:11 UTCEG score recompute
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  37. 2026-07-20 04:46 UTCOSV refresh
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  42. 2026-07-15 16:57 UTCEPSS rescore
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  45. 2026-07-13 22:30 UTCEPSS rescore
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  48. 2026-07-12 05:46 UTCEPSS rescore
  49. 2026-07-11 08:27 UTCEPSS rescore
  50. 2026-07-09 19:10 UTCEPSS rescore
  51. 2026-07-08 15:15 UTCEPSS rescore
  52. 2026-07-07 13:46 UTCEPSS rescore
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  65. 2026-06-25 13:49 UTCEPSS rescore
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  67. 2026-06-24 14:05 UTCEPSS rescore
  68. 2026-06-23 21:33 UTCEPSS rescore
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  71. 2026-06-21 14:56 UTCEPSS rescore
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  73. 2026-06-21 01:59 UTCEPSS rescore
  74. 2026-06-19 19:25 UTCEPSS rescore
  75. 2026-06-18 17:52 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2026-41144?
CVE-2026-41144 is a publicly disclosed vulnerability published on April 22, 2026. 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…
When was CVE-2026-41144 disclosed?
CVE-2026-41144 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41144 actively exploited?
CVE-2026-41144 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.3% of all scored CVEs.
How do I remediate CVE-2026-41144?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41144, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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