Access Token Exposure in URL Parameters in GridTime™ 3000 GNSS Time Server

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Summary

CVECVE-2026-12620
StatePUBLISHED
AssignerMicrochip
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-19 16:16:17 UTC
Updated2026-06-22 18:29:30 UTC
DescriptionThe 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

Problem Types: CWE-200 | CWE-200 CWE-200

VersionSourceTypeScoreSeverityVector
4.0dc3f6da9-85b5-4a73-84a2-2ec90b40fca5Secondary4.6MEDIUMCVSS: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...
4.0CNACVSS4.6MEDIUMCVSS: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

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Active
Confidentiality
Low
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microchip GridTime 3000 affected 1.0r0.03 1.1r0.0 custom Not specified

References

ReferenceSourceLinkTags
www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-... dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 www.microchip.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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.

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