CVE-2026-82480

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory published 2026-08-30. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: Elevated riskExposed: 0

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

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.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 30, 2026

Last Modified

September 1, 2026

References (5)

Vendor Advisories for CVE-2026-82480(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 81× 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.

  1. 2026-09-19 07:31 UTCGHSA enrichment
  2. 2026-09-18 19:57 UTCEG score recompute
  3. 2026-09-18 19:57 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:23 UTCGHSA enrichment
  6. 2026-09-17 20:49 UTCEG score recompute
  7. 2026-09-17 20:49 UTCGHSA enrichment
  8. 2026-09-17 09:04 UTCGHSA enrichment
  9. 2026-09-16 21:29 UTCEG score recompute
  10. 2026-09-16 21:29 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 09:10 UTCEG score recompute
  13. 2026-09-16 09:10 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 20:55 UTCGHSA enrichment
  16. 2026-09-15 08:46 UTCEG score recompute
  17. 2026-09-15 08:46 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 21:12 UTCGHSA enrichment
  21. 2026-09-14 09:25 UTCGHSA enrichment
  22. 2026-09-13 21:51 UTCEG score recompute
  23. 2026-09-13 21:51 UTCGHSA enrichment
  24. 2026-09-13 10:17 UTCGHSA enrichment
  25. 2026-09-12 22:43 UTCEG score recompute
Show 56 more
  1. 2026-09-12 22:43 UTCGHSA enrichment
  2. 2026-09-12 11:09 UTCGHSA enrichment
  3. 2026-09-11 23:19 UTCGHSA enrichment
  4. 2026-09-11 10:52 UTCEG score recompute
  5. 2026-09-11 10:52 UTCGHSA enrichment
  6. 2026-09-10 23:18 UTCGHSA enrichment
  7. 2026-09-10 11:44 UTCEG score recompute
  8. 2026-09-10 11:44 UTCGHSA enrichment
  9. 2026-09-09 23:51 UTCGHSA enrichment
  10. 2026-09-09 11:13 UTCGHSA enrichment
  11. 2026-09-08 23:39 UTCEG score recompute
  12. 2026-09-08 23:39 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-08 03:46 UTCGHSA enrichment
  15. 2026-09-07 16:11 UTCEG score recompute
  16. 2026-09-07 16:11 UTCGHSA enrichment
  17. 2026-09-07 04:37 UTCGHSA enrichment
  18. 2026-09-06 17:03 UTCEG score recompute
  19. 2026-09-06 17:03 UTCGHSA enrichment
  20. 2026-09-06 13:48 UTCEPSS rescore
  21. 2026-09-06 05:29 UTCGHSA enrichment
  22. 2026-09-05 17:55 UTCEG score recompute
  23. 2026-09-05 17:55 UTCGHSA enrichment
  24. 2026-09-05 15:31 UTCEPSS rescore
  25. 2026-09-05 06:18 UTCGHSA enrichment
  26. 2026-09-04 18:43 UTCEG score recompute
  27. 2026-09-04 18:43 UTCGHSA enrichment
  28. 2026-09-04 07:07 UTCEG score recompute
  29. 2026-09-04 07:07 UTCGHSA enrichment
  30. 2026-09-04 05:07 UTCEPSS rescore
  31. 2026-09-03 19:30 UTCGHSA enrichment
  32. 2026-09-03 07:53 UTCGHSA enrichment
  33. 2026-09-02 20:16 UTCEG score recompute
  34. 2026-09-02 20:16 UTCGHSA enrichment
  35. 2026-09-02 14:12 UTCEPSS rescore
  36. 2026-09-02 08:38 UTCGHSA enrichment
  37. 2026-09-01 21:02 UTCGHSA enrichment
  38. 2026-09-01 17:42 UTCEG score recompute
  39. 2026-09-01 17:42 UTCGHSA enrichment
  40. 2026-09-01 13:54 UTCEPSS rescore
  41. 2026-09-01 06:07 UTCEG score recompute
  42. 2026-09-01 06:07 UTCGHSA enrichment
  43. 2026-09-01 04:40 UTCEPSS rescore
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-08-31 18:31 UTCEG score recompute
  46. 2026-08-31 18:31 UTCGHSA enrichment
  47. 2026-08-31 17:12 UTCGHSA enrichment
  48. 2026-08-31 05:35 UTCEG score recompute
  49. 2026-08-31 05:35 UTCGHSA enrichment
  50. 2026-08-30 19:18 UTCEPSS rescore
  51. 2026-08-30 19:17 UTCEPSS rescore
  52. 2026-08-30 18:02 UTCEG score recompute
  53. 2026-08-30 18:02 UTCGHSA enrichment
  54. 2026-08-30 06:28 UTCEG score recompute
  55. 2026-08-30 05:37 UTCEG score recompute
  56. 2026-08-30 05:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82480?
CVE-2026-82480 is a high vulnerability published on August 30, 2026. A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFESBGetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfesbutil.c of the component cFE Software Bus. Performing a manipulation of the argument TotalMsgSize/HdrSize results in integer…
When was CVE-2026-82480 disclosed?
CVE-2026-82480 was first published in the National Vulnerability Database on August 30, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82480 actively exploited?
CVE-2026-82480 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 86.6% of all scored CVEs.
What is the CVSS score of CVE-2026-82480?
CVE-2026-82480 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-82480?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82480, 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.

Dependency Blast Radius

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