CVE-2026-67977

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An integer overflow in the Svc::FileDownlink::SendPartial component of fprime framework v4.2.2 allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

CVE-2026-67977：SendPartial Integer Overflow Leading to Assertion DoS · Issue #1 · freedomfoxvare/cve · GitHub

https://github.com/freedomfoxvare/cve/issues/1
generic

GitHub - nasa/fprime: F´ - A flight software and embedded systems framework · GitHub

https://github.com/nasa/fprime

Vendor Advisories for CVE-2026-67977(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 67× 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. 2026-08-21 03:23 UTCEG score recompute
  2. 2026-08-21 03:23 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 14:22 UTCGHSA enrichment
  5. 2026-08-19 23:46 UTCEG score recompute
  6. 2026-08-19 23:46 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 10:45 UTCGHSA enrichment
  9. 2026-08-18 21:44 UTCEG score recompute
  10. 2026-08-18 21:44 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 08:41 UTCGHSA enrichment
  13. 2026-08-17 19:37 UTCEG score recompute
  14. 2026-08-17 19:37 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 06:06 UTCGHSA enrichment
  17. 2026-08-16 17:06 UTCEG score recompute
  18. 2026-08-16 17:06 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 04:05 UTCEG score recompute
  21. 2026-08-16 04:05 UTCGHSA enrichment
  22. 2026-08-15 15:05 UTCGHSA enrichment
  23. 2026-08-15 02:04 UTCEG score recompute
  24. 2026-08-15 02:04 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 42 more
  1. 2026-08-14 13:03 UTCGHSA enrichment
  2. 2026-08-14 00:03 UTCEG score recompute
  3. 2026-08-14 00:03 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 11:02 UTCGHSA enrichment
  6. 2026-08-12 22:02 UTCEG score recompute
  7. 2026-08-12 22:02 UTCGHSA enrichment
  8. 2026-08-12 13:51 UTCEPSS rescore
  9. 2026-08-12 09:01 UTCGHSA enrichment
  10. 2026-08-11 20:00 UTCEG score recompute
  11. 2026-08-11 20:00 UTCGHSA enrichment
  12. 2026-08-11 06:58 UTCEG score recompute
  13. 2026-08-11 06:58 UTCGHSA enrichment
  14. 2026-08-11 00:00 UTCEPSS rescore
  15. 2026-08-10 17:58 UTCGHSA enrichment
  16. 2026-08-10 04:51 UTCGHSA enrichment
  17. 2026-08-09 15:50 UTCEG score recompute
  18. 2026-08-09 15:50 UTCGHSA enrichment
  19. 2026-08-09 13:47 UTCEPSS rescore
  20. 2026-08-09 02:50 UTCEG score recompute
  21. 2026-08-09 02:50 UTCGHSA enrichment
  22. 2026-08-08 16:37 UTCEPSS rescore
  23. 2026-08-08 13:50 UTCGHSA enrichment
  24. 2026-08-08 00:49 UTCEG score recompute
  25. 2026-08-08 00:49 UTCGHSA enrichment
  26. 2026-08-07 11:48 UTCGHSA enrichment
  27. 2026-08-06 22:48 UTCEG score recompute
  28. 2026-08-06 22:47 UTCGHSA enrichment
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-06 09:34 UTCEG score recompute
  31. 2026-08-06 09:34 UTCGHSA enrichment
  32. 2026-08-05 20:33 UTCEG score recompute
  33. 2026-08-05 20:33 UTCGHSA enrichment
  34. 2026-08-05 19:40 UTCEG score recompute▲ 7.50
  35. 2026-08-05 19:40 UTCGHSA enrichment
  36. 2026-08-05 19:40 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-03 22:21 UTCNVD update
  41. 2026-08-03 22:03 UTCEG score recompute
  42. 2026-08-03 22:03 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-67977?
CVE-2026-67977 is a high vulnerability published on August 3, 2026. An integer overflow in the Svc::FileDownlink::SendPartial component of fprime framework v4.2.2 allows attackers to cause a Denial of Service (DoS) via a crafted input.
When was CVE-2026-67977 disclosed?
CVE-2026-67977 was first published in the National Vulnerability Database on August 3, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67977 actively exploited?
CVE-2026-67977 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 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-67977?
CVE-2026-67977 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-67977?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67977, 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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