CVE-2020-8973: ZGR TPS200 NG in its 2.00 firmware version and 1.01 hardware version, does not properly accept specially const

This month

CRITICAL 9.3MITIGATE

CVE-2020-8973 is a critical-severity flaw (CVSS 9.3) affecting zgr tps200 ng firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZGR TPS200 NG in its 2.00 firmware version and 1.01 hardware version, does not properly accept specially constructed requests. This allows an attacker with access to the network where the affected asset is located, to operate and change several parameters without having to be registered as a user on the web that owns the device.

Why this priority

Critical severity

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

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-284
Published	2022-10-17
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: zigor

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

Am I affected?

Timeline

2022-10-17 22:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

zigor zgr tps200 ng firmware MITIGATE

Affected: 2.00

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.00

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-2020-8973?

zgr tps200 ng firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-8973 being exploited?

CVE-2020-8973 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-2020-8973 affect?

CVE-2020-8973 affects zgr tps200 ng firmware. Severity is critical (CVSS 9.3). ZGR TPS200 NG in its 2.00 firmware version and 1.01 hardware version, does not properly accept specially constructed requests. This allows an attacker with access to the network where the affected asset is located, to operate and change sev

How urgent is CVE-2020-8973?

Priority 43/100. Critical severity

Related CVEs

CVE-2020-8976 CRITICAL 9.6 MITIGATE The integrated server of the ZGR TPS200 NG on its 2.00 firmware version and 1.01 hardware version, allows a re
CVE-2020-8975 HIGH 7.5 MITIGATE ZGR TPS200 NG in its 2.00 firmware version and 1.01 hardware version, allows a remote attacker with access to
CVE-2020-8974 CRITICAL 10.0 MITIGATE In ZGR TPS200 NG 2.00 firmware version and 1.01 hardware version, the firmware upload process does not perform

References

← Back to latest CVEs