CVE-2026-85426

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-70814 (ENISA EUVD) · GHSA-wh57-49q6-m5jh (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan mitigationThe upstream fix is not in a release yet: until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 9.8Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

MOOS-IvP uMemWatch through 24.8.1 constructs shell commands from attacker-chosen MOOS client names without sanitization. Attackers can inject shell metacharacters into client names to execute arbitrary commands as the uMemWatch process user through unquoted redirection targets in system calls.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.
EPSS PROB
0.9%
EPSS %ILE
60th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Oct 31, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
Web page

MOOS-IvP through 24.8.1 uMemWatch Command Injection via MOOS Client Names | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-umemwatch-command-injection-via-moos-client-names
GitHub pull request

uMemWatch: measure memory without a shell

Upstream fix in progress (PR #121 · moos-ivp/moos-ivp, state=closed)

https://github.com/moos-ivp/moos-ivp/pull/121
GitHub commit

commit 0b2bd991b0ca (moos-ivp/moos-ivp)

Fix landed in moos-ivp/moos-ivp commit 0b2bd991b0ca — awaiting tagged release

https://github.com/moos-ivp/moos-ivp/commit/0b2bd991b0ca7139b1edcf271473d33e7eccfc20
Web page

moos-ivp/ivp/src/uMemWatch/MemWatch.cpp at 1de9ae146cd63c209e8c3fd81611a4ed2472971b · moos-ivp/moos-ivp · GitHub

https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/uMemWatch/MemWatch.cpp#L182
Web page

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

Vendor Advisories for CVE-2026-85426(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 22× in last 7d / 118× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 350 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 250 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  2. 2026-11-02 09:48 UTCEG score recompute
  3. 2026-11-02 09:47 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  5. 2026-11-01 11:17 UTCEG score recompute
  6. 2026-11-01 11:17 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  8. 2026-10-31 12:45 UTCEG score recompute
  9. 2026-10-31 12:45 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  11. 2026-10-30 14:14 UTCEG score recompute
  12. 2026-10-30 14:14 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  14. 2026-10-29 15:43 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-28 17:03 UTCEG score recompute
  16. 2026-10-28 17:03 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  18. 2026-10-27 18:28 UTCEG score recompute
  19. 2026-10-27 18:28 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  21. 2026-10-26 19:57 UTCEG score recompute
  22. 2026-10-26 19:57 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  24. 2026-10-25 19:19 UTCEG score recompute
  25. 2026-10-25 19:19 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  2. 2026-10-25 13:55 UTCEG score recompute
  3. 2026-10-24 20:44 UTCEG score recompute
  4. 2026-10-24 20:44 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  6. 2026-10-23 22:13 UTCEG score recompute
  7. 2026-10-23 22:13 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.9% · 60th percentile
  9. 2026-10-22 23:40 UTCEG score recompute
  10. 2026-10-22 23:39 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  12. 2026-10-22 01:08 UTCEG score recompute
  13. 2026-10-22 01:07 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  15. 2026-10-21 02:34 UTCEG score recompute
  16. 2026-10-21 02:33 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  18. 2026-10-20 03:47 UTCEG score recompute
  19. 2026-10-20 03:46 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  21. 2026-10-19 04:32 UTCEG score recompute
  22. 2026-10-19 04:32 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  24. 2026-10-18 05:58 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-18 03:05 UTCEG score recompute
  26. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  27. 2026-10-17 05:59 UTCEG score recompute
  28. 2026-10-17 05:59 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  30. 2026-10-16 07:06 UTCEG score recompute
  31. 2026-10-16 07:06 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  32. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  33. 2026-10-15 05:53 UTCEG score recompute
  34. 2026-10-15 05:52 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  36. 2026-10-14 01:30 UTCEG score recompute
  37. 2026-10-14 01:30 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  39. 2026-10-12 21:41 UTCEG score recompute
  40. 2026-10-12 21:41 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  41. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  42. 2026-10-12 14:52 UTCEG score recompute
  43. 2026-10-12 05:14 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-10-11 19:17 UTCEG score recompute
  45. 2026-10-11 16:34 UTCEG score recompute
  46. 2026-10-11 13:51 UTCEG score recompute
  47. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  48. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  49. 2026-10-10 17:21 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  50. 2026-10-10 12:54 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  51. 2026-10-10 09:05 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  52. 2026-10-10 03:18 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-10-09 23:25 UTCEG score recompute
  54. 2026-10-09 23:25 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  55. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  56. 2026-10-09 05:16 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  57. 2026-10-09 01:23 UTCEG score recompute
  58. 2026-10-09 01:23 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  59. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  60. 2026-10-08 07:04 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  61. 2026-10-08 03:14 UTCEG score recompute
  62. 2026-10-08 03:14 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  63. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  64. 2026-10-07 23:24 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  65. 2026-10-07 07:54 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  66. 2026-10-07 04:04 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  67. 2026-10-07 00:15 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  68. 2026-10-06 20:24 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-10-06 16:25 UTCEG score recompute
  70. 2026-10-06 16:25 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  71. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  72. 2026-10-06 12:36 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  73. 2026-10-06 08:47 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  74. 2026-10-06 04:53 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-10-06 00:30 UTCGHSA enrichmentGHSA-wh57-49q6-m5jh · GitHub severity CRITICAL · GitHub CVSS 9.8

Frequently asked(5)

What is CVE-2026-85426?
CVE-2026-85426 is a critical-severity vulnerability; its CVE record was published on September 3, 2026. MOOS-IvP uMemWatch through 24.8.1 constructs shell commands from attacker-chosen MOOS client names without sanitization. Attackers can inject shell metacharacters into client names to execute arbitrary commands as the uMemWatch process user through unquoted redirection targets in system calls.
When was CVE-2026-85426 made public?
CVE-2026-85426 was made public on September 2, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 3, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-85426 actively exploited?
CVE-2026-85426 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (60th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-85426?
CVE-2026-85426 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-85426?
An upstream fix for CVE-2026-85426 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-85426 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-85426

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