CVE-2026-12620Network attack vector

Token theft via access tokens in URLs

Published Jun 19, 2026 · Updated Jun 19, 2026

Information disclosure in Microchip GridTime 3000 firmware 1.0r0.03 through 1.1r0.0 allows remote authenticated users to steal access tokens. Several web-management endpoints place access tokens in URL parameters instead of keeping them out of request URLs. Exploitation requires valid high-privilege credentials and active user interaction; a disclosed token permits impersonation of its legitimate user.

CVSS severity6.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Microchip GridTime 3000 firmware 1.0r0.03 through 1.1r0.0 allows remote authenticated users to steal access tokens. Several web-management endpoints place access tokens in URL parameters instead of keeping them out of request URLs. Exploitation requires valid high-privilege credentials and active user interaction; a disclosed token permits impersonation of its legitimate user.

The record

CVE
CVE-2026-12620
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
Microchip Technology
Product
GridTime 3000 GNSS Time Server
Classifications
CWE-200, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0r0.03 <=1.1r0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microchip Technology · GridTime 3000 GNSS Time Serverversion=1.0r0.03 <=1.1r0.0

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.6Microchip TechnologyCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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