CVE-2026-12620
Access Token Exposure in URL Parameters in GridTime™ 3000 GNSS Time Server
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.
INFO
Published Date :
June 19, 2026, 4:16 p.m.
Last Modified :
July 9, 2026, 3:55 p.m.
Remotely Exploit :
Yes !
Source :
dc3f6da9-85b5-4a73-84a2-2ec90b40fca5
Affected Products
The following products are affected by CVE-2026-12620
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 | ||||
| CVSS 4.0 | MEDIUM | dc3f6da9-85b5-4a73-84a2-2ec90b40fca5 |
Solution
- Avoid including access tokens in URL parameters.
- Implement secure token management practices.
- Restrict access to sensitive endpoints.
- Update the system to the latest version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-12620.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12620 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-12620
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12620 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12620 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 09, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:microchip:gridtime_3000_firmware:*:*:*:*:*:*:*:* versions from (including) 1.0r0.03 up to (excluding) 1.2r0.0 OR cpe:2.3:h:microchip:gridtime_3000:-:*:*:*:*:*:*:* Added Reference Type Microchip Technology: https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/gridtime-3000-gnss-time-server-access-token-exposure Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-12620', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-22T16:52:29.215328Z'} -
New CVE Received by dc3f6da9-85b5-4a73-84a2-2ec90b40fca5
Jun. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Microchip', 'product': 'GridTime 3000', 'versions': [{'status': 'affected', 'version': '1.0r0.03', 'versionType': 'custom', 'lessThanOrEqual': '1.1r0.0'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-200 Added Reference https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/gridtime-3000-gnss-time-server-access-token-exposure