CVE-2026-75121

HIGHPre-NVD 7.27.2
EchelonGraph scoreMEDIUM confidence

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

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. A secondary CVSS source baseline 7.2; 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
7.2EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.5%CVSS: 7.2Exploit: None knownExposed 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).

PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contains an authenticated OS command injection vulnerability in /cgi-bin/dispatcher.cgi. The web_vlan_membership_edit_dialog_post handler incorporates the memberTags POST parameter into a shell command without sanitization. A remote authenticated attacker can send a crafted memberTags value to execute arbitrary operating-system commands on the device.

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
33
EG Risk 33/100

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 (value × EchelonGraph’s weight)
Severity72% × 45%
The EG Score, 7.2 of 10.
Exploitation1.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
1.5%
EPSS %ILE
73rd
KEV
Not listed

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

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; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (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

August 28, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 28, 2026
Fix referenced — no release confirmed yet.
Web page

PLANET GS-4210-16P2S Command Injection via dispatcher.cgi web_vlan_membership_edit_dialog_post | Advisories | VulnCheck

https://www.vulncheck.com/advisories/planet-gs-4210-16p2s-command-injection-via-dispatcher-cgi-web-vlan-membership-edit-dialog-post
Web page

PLANET GS-4210-16P2S V3 - Security Advisory - PLANET Technology

https://www.planet.com.tw/en/support/security-advisory/10

Vendor Advisories for CVE-2026-75121(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 21× in last 7d / 103× 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 172 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 72 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.5% · 73rd percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  3. 2026-10-13 07:22 UTCEG score recompute
  4. 2026-10-13 07:22 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  5. 2026-10-12 16:35 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  6. 2026-10-12 15:39 UTCEG score recompute
  7. 2026-10-11 19:25 UTCEG score recompute
  8. 2026-10-11 16:40 UTCEG score recompute
  9. 2026-10-11 14:00 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  12. 2026-10-10 13:38 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  13. 2026-10-10 00:54 UTCEG score recompute
  14. 2026-10-10 00:54 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  15. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  16. 2026-10-09 02:41 UTCEG score recompute
  17. 2026-10-09 02:41 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  18. 2026-10-08 17:13 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  19. 2026-10-08 00:52 UTCEG score recompute
  20. 2026-10-08 00:52 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  21. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  22. 2026-10-07 09:10 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  23. 2026-10-06 20:28 UTCEG score recompute
  24. 2026-10-06 20:28 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  25. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
Show 75 more
  1. 2026-10-06 07:28 UTCEG score recompute
  2. 2026-10-06 07:28 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  3. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  4. 2026-10-05 17:11 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  5. 2026-10-05 04:30 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  6. 2026-10-04 15:33 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  7. 2026-10-04 02:27 UTCEG score recompute
  8. 2026-10-04 02:27 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  9. 2026-10-03 14:26 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  10. 2026-10-03 13:42 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  11. 2026-10-02 22:54 UTCEG score recompute
  12. 2026-10-02 22:54 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  13. 2026-10-02 10:03 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  14. 2026-10-01 21:22 UTCEG score recompute
  15. 2026-10-01 21:22 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  17. 2026-10-01 08:35 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  18. 2026-09-30 19:49 UTCEG score recompute
  19. 2026-09-30 19:49 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  20. 2026-09-30 03:50 UTCEG score recompute
  21. 2026-09-30 03:50 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  22. 2026-09-29 15:24 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  23. 2026-09-29 12:23 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  24. 2026-09-28 23:42 UTCEG score recompute
  25. 2026-09-28 23:42 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  26. 2026-09-28 13:52 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  27. 2026-09-28 10:59 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  28. 2026-09-27 22:18 UTCEG score recompute
  29. 2026-09-27 22:18 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  30. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  31. 2026-09-27 09:37 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  32. 2026-09-26 20:55 UTCEG score recompute
  33. 2026-09-26 20:55 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  34. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  35. 2026-09-26 08:08 UTCEG score recompute
  36. 2026-09-26 08:07 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  37. 2026-09-26 00:28 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  38. 2026-09-25 11:29 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  39. 2026-09-24 22:07 UTCEG score recompute
  40. 2026-09-24 22:07 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  41. 2026-09-24 14:04 UTCEPSS rescoreEPSS 1.5% · 72nd percentile
  42. 2026-09-24 08:46 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  43. 2026-09-23 20:05 UTCEG score recompute
  44. 2026-09-23 20:05 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  45. 2026-09-23 17:54 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  46. 2026-09-23 07:24 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  47. 2026-09-22 18:43 UTCEG score recompute
  48. 2026-09-22 18:43 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  49. 2026-09-22 16:01 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  50. 2026-09-22 05:58 UTCEG score recompute
  51. 2026-09-22 05:58 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  52. 2026-09-21 21:09 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  53. 2026-09-21 17:17 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  54. 2026-09-21 04:15 UTCEG score recompute
  55. 2026-09-21 04:15 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  57. 2026-09-20 15:34 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  58. 2026-09-20 02:51 UTCEG score recompute
  59. 2026-09-20 02:51 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  60. 2026-09-19 14:09 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  61. 2026-09-19 01:24 UTCEG score recompute
  62. 2026-09-19 01:24 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  63. 2026-09-18 19:28 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  64. 2026-09-18 12:42 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  65. 2026-09-18 00:00 UTCEG score recompute
  66. 2026-09-18 00:00 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  67. 2026-09-17 10:36 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  68. 2026-09-16 21:53 UTCEG score recompute
  69. 2026-09-16 21:53 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  70. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  71. 2026-09-16 09:11 UTCEG score recompute
  72. 2026-09-16 09:11 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  73. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  74. 2026-09-15 20:09 UTCGHSA enrichmentGHSA-68x8-vj3q-q9cg · GitHub severity HIGH · GitHub CVSS 7.2
  75. 2026-09-15 07:27 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75121?
CVE-2026-75121 is a high-severity vulnerability; its CVE record was published on August 28, 2026. PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contains an authenticated OS command injection vulnerability in /cgi-bin/dispatcher.cgi. The webvlanmembershipeditdialog_post handler incorporates the memberTags POST parameter into a shell command without sanitization. A remote authenticated…
When was CVE-2026-75121 made public?
CVE-2026-75121 was made public on August 27, 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 August 28, 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-2026-75121 actively exploited?
CVE-2026-75121 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% probability of exploitation in the next 30 days (73rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75121?
CVE-2026-75121 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75121?
A fix for CVE-2026-75121 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-2026-75121 are linked in the Vendor Advisories panel on this page.

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