CVE-2026-85447

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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: None knownExposed: 0

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

MOOS-IvP pRealm through version 24.8.1 accepts unbounded REALMCAST_REQ subscriptions without validating duration or variable list limits. Attackers can register long-lived pipeways with many variables to cause pRealm to generate excessive output indefinitely, exhausting system resources.

CVSS v3
7.5
EG Score
7.5(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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Sep 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

MOOS-IvP through 24.8.1 pRealm Unbounded REALMCAST_REQ Subscription Denial of Service | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-prealm-unbounded-realmcast-req-subscription-denial-of-service
generic

moos-ivp/ivp/src/pRealm/PipeWay.cpp at 1de9ae146cd63c209e8c3fd81611a4ed2472971b · moos-ivp/moos-ivp · GitHub

https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/pRealm/PipeWay.cpp#L109
generic

GitHub - moos-ivp/moos-ivp: MOOS-IvP is a set of modules for providing autonomy on robotic platforms, in particular autonomous marine vehicles. · GitHub

https://github.com/moos-ivp/moos-ivp
github_commit

commit 8a4bb9d9154a (moos-ivp/moos-ivp)

Fix landed in moos-ivp/moos-ivp commit 8a4bb9d9154a — awaiting tagged release

https://github.com/moos-ivp/moos-ivp/commit/8a4bb9d9154a70e769a7290ee11dde5157c03e9b
github_pr

pRealm: bound what a REALMCAST_REQ may ask for

Upstream fix in progress (PR #132 · moos-ivp/moos-ivp, state=open)

https://github.com/moos-ivp/moos-ivp/pull/132

Vendor Advisories for CVE-2026-85447(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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 15:31 UTCGHSA enrichment
  3. 2026-09-20 03:19 UTCEG score recompute
  4. 2026-09-20 03:19 UTCGHSA enrichment
  5. 2026-09-19 15:09 UTCGHSA enrichment
  6. 2026-09-19 02:51 UTCEG score recompute
  7. 2026-09-19 02:51 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 14:41 UTCGHSA enrichment
  10. 2026-09-18 02:31 UTCEG score recompute
  11. 2026-09-18 02:31 UTCGHSA enrichment
  12. 2026-09-17 19:32 UTCEPSS rescore
  13. 2026-09-17 14:20 UTCGHSA enrichment
  14. 2026-09-17 02:09 UTCEG score recompute
  15. 2026-09-17 02:09 UTCGHSA enrichment
  16. 2026-09-16 14:09 UTCEPSS rescore
  17. 2026-09-16 13:58 UTCEG score recompute
  18. 2026-09-16 13:58 UTCGHSA enrichment
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-16 01:38 UTCGHSA enrichment
  21. 2026-09-15 13:27 UTCEG score recompute
  22. 2026-09-15 13:27 UTCGHSA enrichment
  23. 2026-09-15 03:12 UTCEPSS rescore
  24. 2026-09-15 03:12 UTCEPSS rescore
  25. 2026-09-15 01:16 UTCGHSA enrichment
Show 42 more
  1. 2026-09-14 13:06 UTCGHSA enrichment
  2. 2026-09-14 00:55 UTCEG score recompute
  3. 2026-09-14 00:55 UTCGHSA enrichment
  4. 2026-09-13 12:45 UTCGHSA enrichment
  5. 2026-09-13 00:34 UTCEG score recompute
  6. 2026-09-13 00:34 UTCGHSA enrichment
  7. 2026-09-12 12:22 UTCGHSA enrichment
  8. 2026-09-12 00:11 UTCEG score recompute
  9. 2026-09-12 00:11 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 12:01 UTCEG score recompute
  13. 2026-09-11 12:01 UTCGHSA enrichment
  14. 2026-09-10 23:51 UTCGHSA enrichment
  15. 2026-09-10 11:36 UTCEG score recompute
  16. 2026-09-10 11:36 UTCGHSA enrichment
  17. 2026-09-09 23:25 UTCGHSA enrichment
  18. 2026-09-09 08:29 UTCEG score recompute
  19. 2026-09-09 08:29 UTCGHSA enrichment
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-08 20:19 UTCGHSA enrichment
  22. 2026-09-08 09:59 UTCGHSA enrichment
  23. 2026-09-07 20:31 UTCEG score recompute
  24. 2026-09-07 20:31 UTCGHSA enrichment
  25. 2026-09-07 08:20 UTCGHSA enrichment
  26. 2026-09-06 20:07 UTCEG score recompute
  27. 2026-09-06 20:06 UTCGHSA enrichment
  28. 2026-09-06 13:48 UTCEPSS rescore
  29. 2026-09-06 07:52 UTCGHSA enrichment
  30. 2026-09-05 19:41 UTCEG score recompute
  31. 2026-09-05 19:41 UTCGHSA enrichment
  32. 2026-09-05 15:31 UTCEPSS rescore
  33. 2026-09-05 07:31 UTCGHSA enrichment
  34. 2026-09-04 19:21 UTCEG score recompute
  35. 2026-09-04 19:20 UTCGHSA enrichment
  36. 2026-09-04 18:41 UTCEG score recompute
  37. 2026-09-04 18:41 UTCGHSA enrichment
  38. 2026-09-04 11:38 UTCEG score recompute
  39. 2026-09-04 11:38 UTCGHSA enrichment
  40. 2026-09-03 23:27 UTCEG score recompute
  41. 2026-09-03 22:44 UTCEG score recompute
  42. 2026-09-03 22:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85447?
CVE-2026-85447 is a high vulnerability published on September 3, 2026. MOOS-IvP pRealm through version 24.8.1 accepts unbounded REALMCAST_REQ subscriptions without validating duration or variable list limits. Attackers can register long-lived pipeways with many variables to cause pRealm to generate excessive output indefinitely, exhausting system resources.
When was CVE-2026-85447 disclosed?
CVE-2026-85447 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85447 actively exploited?
CVE-2026-85447 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 71.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85447?
CVE-2026-85447 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-85447?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85447, 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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