CVE-2019-11326: An issue was discovered on Topcon Positioning Net-G5 GNSS Receiver devices with firmware 5.2.2

This month

HIGH 8.8MITIGATE

CVE-2019-11326 is a high-severity flaw (CVSS 8.8) affecting net-g5 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on Topcon Positioning Net-G5 GNSS Receiver devices with firmware 5.2.2. The web interface of the product is protected by a login. A guest is allowed to login. Once logged in as a guest, an attacker can browse a URL to read the password of the administrative user. The same procedure allows a regular user to gain administrative privileges. The guest login is possible in the default configuration.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-425
Published	2019-09-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: topcon

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-09-20 19:15 UTCPublished CVE record published
2026-06-17 02:12 UTCUpdated Record last modified

topcon net-g5 firmware MITIGATE

Affected: 5.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.2.2

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-2019-11326?

net-g5 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-11326 being exploited?

CVE-2019-11326 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-2019-11326 affect?

CVE-2019-11326 affects net-g5 firmware. Severity is high (CVSS 8.8). An issue was discovered on Topcon Positioning Net-G5 GNSS Receiver devices with firmware 5.2.2. The web interface of the product is protected by a login. A guest is allowed to login. Once logged in as a guest, an attacker can browse a URL t

How urgent is CVE-2019-11326?

Priority 48/100. High severity

Related CVEs

CVE-2019-11327 MEDIUM 4.9 MITIGATE An issue was discovered on Topcon Positioning Net-G5 GNSS Receiver devices with firmware 5.2.2

References

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