CVE-2022-3083: All versions of Landis+Gyr E850 (ZMQ200) are vulnerable to CWE-784: Reliance on Cookies Without Validation and

Routine

LOW 3.9MITIGATE

CVE-2022-3083 is a low-severity flaw (CVSS 3.9) affecting e850 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

All versions of Landis+Gyr E850 (ZMQ200) are vulnerable to CWE-784: Reliance on Cookies Without Validation and Integrity. The device's web application navigation depends on the value of the session cookie. The web application could become inaccessible for the user if an attacker changes the cookie values.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	3.9 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-784, CWE-565
Published	2023-02-01
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: landisgyr

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

Am I affected?

Timeline

2023-02-01 21:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

landisgyr e850 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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-2022-3083?

e850 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-3083 being exploited?

CVE-2022-3083 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-2022-3083 affect?

CVE-2022-3083 affects e850 firmware. Severity is low (CVSS 3.9). All versions of Landis+Gyr E850 (ZMQ200) are vulnerable to CWE-784: Reliance on Cookies Without Validation and Integrity. The device's web application navigation depends on the value of the session cookie. The web application could become i

How urgent is CVE-2022-3083?

Priority 21/100. No elevated risk signals yet.

References

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