CVE-2026-12620: The GridTime 3000 GNSS Time Server leaks the access token in the URL parameters of some endpoints. This issue

Q: How do I fix CVE-2026-12620?

gridtime 3000 firmware: upgrade to 1.2r0.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-12620 being exploited?

CVE-2026-12620 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-12620 affect?

CVE-2026-12620 affects gridtime 3000 firmware. Severity is medium (CVSS 6.5). 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.

Q: How urgent is CVE-2026-12620?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-12620 is a medium-severity flaw (CVSS 6.5) affecting gridtime 3000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-200
Published	2026-06-19
Last modified	2026-10-25

Publisher (CNA): Microchip Technology · Vendor: microchip

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-19 16:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

microchip gridtime 3000 firmware UPGRADE

Affected: >= 1.0r0.03 and < 1.2r0.0

Fixed in: 1.2r0.0

Safe to downgrade to: a release before 1.0r0.03

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-12620?

gridtime 3000 firmware: upgrade to 1.2r0.0. Exact commands for each OS are on this page.

Is CVE-2026-12620 being exploited?

CVE-2026-12620 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-12620 affect?

CVE-2026-12620 affects gridtime 3000 firmware. Severity is medium (CVSS 6.5). 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.

How urgent is CVE-2026-12620?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2026-12619 MEDIUM 5.4 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in M
CVE-2026-12621 MEDIUM 5.4 UPGRADE Improper neutralization of input during web page generation XSS vulnerability in the GridTime 3000 (password
CVE-2026-12622 MEDIUM 5.4 UPGRADE The GridTime 3000 GNSS Time Server has an open redirect vulnerability in the password change form submission.

References

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