Medium severity · published Jun 19, 2026
CVE-2026-12621
Cross-Site Scripting (XSS) Vulnerability in Password Reset Redirect in GridTime™ 3000 GNSS Time Server
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
Improper neutralization of input during web page generation XSS
vulnerability in the GridTime 3000 (password reset form) allows XSS.
This issue affects GridTime 3000: from 1.0r0.03 before 1.2r0.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
G3
GridTime 3000 · Microchip
1.0r0.03 through 1.1r0.0 · source: vendor
G3
Gridtime 3000 Firmware · Microchip
1.0r0.03 before 1.2r0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12621
Vendor Advisory
https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/gridtime-3000-gnss-time-server-dom-xss
More from GridTime 3000
6.5
CVE-2026-12620
Access Token Exposure in URL Parameters in GridTime™ 3000 GNSS Time Server
5.4
CVE-2026-12622
Open Redirect Vulnerability in Password Reset Submission in GridTime™ 3000 GNSS Time Server
5.4
CVE-2026-12619
GridTime™ 3000 GNSS Time Server CSRF to XSS