Access Token Exposure in URL Parameters in GridTime™ 3000 GNSS Time Server
Summary
| CVE | CVE-2026-12620 |
|---|---|
| State | PUBLISHED |
| Assigner | Microchip |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-19 16:16:17 UTC |
| Updated | 2026-07-09 15:55:02 UTC |
| Description | The GridTime 3000 GNSS Time Server leaks the access token in the URL parameters of some endpoints. This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0. |
Risk And Classification
Primary CVSS: v4.0 4.6 MEDIUM from dc3f6da9-85b5-4a73-84a2-2ec90b40fca5
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002270000 probability, percentile 0.133590000 (date 2026-07-12)
Problem Types: CWE-200 | NVD-CWE-noinfo | CWE-200 CWE-200
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 | Secondary | 4.6 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/C... |
| 4.0 | CNA | CVSS | 4.6 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A |
| 3.1 | [email protected] | Primary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Microchip | Gridtime 3000 | - | All | All | All |
| Operating System | Microchip | Gridtime 3000 Firmware | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microchip | GridTime 3000 | affected 1.0r0.03 1.1r0.0 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-... | dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 | www.microchip.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Leo Angelo Diamat (Bastion Security Group) (en)
Additional Advisory Data
Solutions
CNA: Upgrade GridTime 3000 GNSS Time Server to the latest firmware. As of the firmware release 1.2r0.0, Access tokens have been removed from URL parameters on affected endpoints.