CVE-2026-85436

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: 1%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 essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to trigger an oversized memcpy operation that writes past the destination buffer, causing heap corruption and denial of service.

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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
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 essential-moos through 10.0.1 pMOOSBridge Heap Corruption via Negative UDP Length | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pmoosbridge-heap-corruption-via-negative-udp-length
generic

essential-moos/Essentials/pMOOSBridge/MOOSUDPLink.cpp at b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6 · themoos/essential-moos · GitHub

https://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pMOOSBridge/MOOSUDPLink.cpp#L171
generic

GitHub - themoos/essential-moos: a set of useful applications that leverage the core-moos communications layer · GitHub

https://github.com/themoos/essential-moos
github_commit

commit 613175fcf63f (themoos/essential-moos)

Fix landed in themoos/essential-moos commit 613175fcf63f — awaiting tagged release

https://github.com/themoos/essential-moos/commit/613175fcf63fb9c6c5329c4ec57c2d18588b33e2
github_pr

pMOOSBridge: reject a UDP packet which declares an impossible length

Upstream fix in progress (PR #21 · themoos/essential-moos, state=open)

https://github.com/themoos/essential-moos/pull/21

Vendor Advisories for CVE-2026-85436(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 27× in last 7d / 64× 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 13:36 UTCGHSA enrichment
  2. 2026-09-19 01:31 UTCEG score recompute
  3. 2026-09-19 01:31 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 13:25 UTCGHSA enrichment
  6. 2026-09-18 01:19 UTCEG score recompute
  7. 2026-09-18 01:19 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 13:14 UTCGHSA enrichment
  10. 2026-09-17 01:08 UTCEG score recompute
  11. 2026-09-17 01:08 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 13:02 UTCEG score recompute
  14. 2026-09-16 13:02 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 00:57 UTCGHSA enrichment
  17. 2026-09-15 12:52 UTCEG score recompute
  18. 2026-09-15 12:51 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 00:45 UTCGHSA enrichment
  22. 2026-09-14 12:39 UTCGHSA enrichment
  23. 2026-09-14 00:26 UTCEG score recompute
  24. 2026-09-14 00:26 UTCGHSA enrichment
  25. 2026-09-13 12:20 UTCGHSA enrichment
Show 39 more
  1. 2026-09-13 00:15 UTCEG score recompute
  2. 2026-09-13 00:15 UTCGHSA enrichment
  3. 2026-09-12 12:09 UTCGHSA enrichment
  4. 2026-09-12 00:03 UTCEG score recompute
  5. 2026-09-12 00:03 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 11:57 UTCEG score recompute
  9. 2026-09-11 11:57 UTCGHSA enrichment
  10. 2026-09-10 23:51 UTCGHSA enrichment
  11. 2026-09-10 11:32 UTCEG score recompute
  12. 2026-09-10 11:32 UTCGHSA enrichment
  13. 2026-09-09 23:26 UTCGHSA enrichment
  14. 2026-09-09 08:25 UTCEG score recompute
  15. 2026-09-09 08:25 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-08 20:20 UTCGHSA enrichment
  18. 2026-09-08 16:27 UTCGHSA enrichment
  19. 2026-09-08 03:04 UTCEG score recompute
  20. 2026-09-08 03:04 UTCGHSA enrichment
  21. 2026-09-07 14:58 UTCGHSA enrichment
  22. 2026-09-07 02:53 UTCGHSA enrichment
  23. 2026-09-06 14:42 UTCEG score recompute
  24. 2026-09-06 14:42 UTCGHSA enrichment
  25. 2026-09-06 13:48 UTCEPSS rescore
  26. 2026-09-06 02:37 UTCEG score recompute
  27. 2026-09-06 02:37 UTCGHSA enrichment
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 14:31 UTCGHSA enrichment
  30. 2026-09-05 02:25 UTCGHSA enrichment
  31. 2026-09-04 14:19 UTCEG score recompute
  32. 2026-09-04 14:19 UTCGHSA enrichment
  33. 2026-09-04 13:45 UTCEG score recompute
  34. 2026-09-04 13:45 UTCGHSA enrichment
  35. 2026-09-04 11:36 UTCEG score recompute
  36. 2026-09-04 11:36 UTCGHSA enrichment
  37. 2026-09-03 23:30 UTCEG score recompute
  38. 2026-09-03 22:44 UTCEG score recompute
  39. 2026-09-03 22:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85436?
CVE-2026-85436 is a high vulnerability published on September 3, 2026. MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to…
When was CVE-2026-85436 disclosed?
CVE-2026-85436 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-2026-85436 actively exploited?
CVE-2026-85436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.4% of all scored CVEs.
What is the CVSS score of CVE-2026-85436?
CVE-2026-85436 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-85436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85436, 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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