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

published 2023-02-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-42512

cvss: 3.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-026-07 updated 2023-01-26 cvss 3.9

Landis+Gyr E850

Landis+Gyr E850 (ZMQ200)
affected: mitigation “Landis+Gyr has fixed this vulnerability and recommends users update to the latest version. For information on how to obtain this update, users should reach out to Landis+Gyr support.” landisgyr.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-16)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Affected products

Landis+Gyr E850 (ZMQ200)

Classification

Weakness

CWE-784 Reliance on Cookies without Validation and Integrity Checking in a Security Decision
CWE-565 Reliance on Cookies without Validation and Integrity Checking

References

cisa.gov /uscert/ics/advisories/icsa-23-026-07
government-resource, third-party-advisory, us-government-resource

Sources

CVE List CVE-2022-3083
NVD CVE-2022-3083

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary