CVE-2026-35018

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-23. A secondary CVSS source baseline 8.8; 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 weekElevated

Also known asEUVD-2026-38452 (ENISA EUVD) · GHSA-jqc2-w244-p56p (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authenticated remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the username JSON parameter processed by the dalStorage_addUserAccount function. Attackers can exploit the unsafe concatenation of user-supplied input into a shell command string passed to rut_doSystemAction without sanitization to achieve full root-level command execution on the underlying operating system.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
1.3%
EPSS %ILE
69th
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 (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

June 23, 2026

Last Modified

October 25, 2026

Advisory Details (3)

Auto-updated Jun 23, 2026
Fix referenced — no release confirmed yet.
Web page

NetComm NF20MESH < R6B032 Authenticated RCE via OS Command Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/netcomm-nf20mesh-r6b032-authenticated-rce-via-os-command-injection
Web page

Signal 11 | Cybersecurity without compromise

https://signal11.io/advisories/netcomm-nf20-mesh-remote-code-execution

Vendor Advisories for CVE-2026-35018(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 12× in last 7d / 40× 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 99 of 271 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 172 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  3. 2026-10-25 23:32 UTCEG score recompute
  4. 2026-10-25 23:32 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-10-25 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  6. 2026-10-25 14:33 UTCEG score recompute
  7. 2026-10-24 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  8. 2026-10-24 13:55 UTCEG score recompute
  9. 2026-10-24 13:55 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  10. 2026-10-23 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  14. 2026-10-19 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  15. 2026-10-18 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  16. 2026-10-18 03:45 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  18. 2026-10-17 15:26 UTCEG score recompute
  19. 2026-10-17 15:26 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-10-16 16:41 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  22. 2026-10-14 16:32 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  23. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  25. 2026-10-12 16:12 UTCEG score recompute
Show 74 more
  1. 2026-10-11 19:54 UTCEG score recompute
  2. 2026-10-11 17:07 UTCEG score recompute
  3. 2026-10-11 14:34 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  7. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  8. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  9. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  10. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  12. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  13. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  14. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  15. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  16. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  18. 2026-09-26 00:26 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  20. 2026-09-18 19:28 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  21. 2026-09-18 10:29 UTCEG score recompute
  22. 2026-09-18 10:29 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-09-17 19:30 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  24. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  26. 2026-09-15 03:11 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  27. 2026-09-14 02:06 UTCEG score recompute
  28. 2026-09-14 02:06 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-09-13 16:47 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  30. 2026-09-13 12:26 UTCEG score recompute
  31. 2026-09-13 12:26 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  32. 2026-09-12 15:01 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  33. 2026-09-11 14:53 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  34. 2026-09-11 09:37 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  35. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  36. 2026-09-08 22:00 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  38. 2026-09-06 13:47 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  39. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  40. 2026-09-02 14:12 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  41. 2026-09-01 13:53 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  42. 2026-09-01 04:39 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  43. 2026-08-30 20:27 UTCEG score recompute
  44. 2026-08-30 20:27 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-08-30 19:17 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  46. 2026-08-30 01:22 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  47. 2026-08-28 21:41 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  48. 2026-08-27 14:25 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  49. 2026-08-26 14:46 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  50. 2026-08-25 13:49 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  51. 2026-08-24 22:12 UTCEG score recompute
  52. 2026-08-24 22:12 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-08-24 04:58 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  54. 2026-08-23 14:18 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-08-23 02:07 UTCEG score recompute
  56. 2026-08-23 02:07 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  58. 2026-08-22 13:57 UTCEG score recompute
  59. 2026-08-22 13:57 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  60. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  61. 2026-08-21 20:22 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-08-21 08:11 UTCEG score recompute
  63. 2026-08-21 08:11 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  65. 2026-08-20 20:00 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  66. 2026-08-20 07:47 UTCEG score recompute
  67. 2026-08-20 07:47 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  69. 2026-08-19 04:50 UTCEG score recompute
  70. 2026-08-19 04:50 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  71. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  72. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  73. 2026-08-17 09:46 UTCGHSA enrichmentGHSA-jqc2-w244-p56p · GitHub severity HIGH · GitHub CVSS 8.8
  74. 2026-08-16 21:36 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-35018?
CVE-2026-35018 is a high-severity vulnerability; its CVE record was published on June 23, 2026. NetComm NF20MESH routers running firmware R6B031 and earlier contain an authenticated remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands as root by injecting shell metacharacters into the username JSON parameter processed by the…
When was CVE-2026-35018 made public?
CVE-2026-35018 was made public on June 18, 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 June 23, 2026. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-35018 actively exploited?
CVE-2026-35018 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (69th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35018?
CVE-2026-35018 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-35018?
A fix for CVE-2026-35018 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-35018 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-35018

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