CVE-2023-1935

published 2023-08-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24122

cvss: 9.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

ROC800-Series RTU devices are vulnerable to an authentication bypass, which could allow an attacker to gain unauthorized access to data or control of the device and cause a denial-of-service condition.

Vendor advisories

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

cisa ICSA-23-206-03 updated 2023-07-25 cvss 9.4

Emerson ROC800 Series RTU and DL8000 Preset Controller

Emerson DL8000 Firmware Emerson DL8000 Hardware series Emerson ROC809 Firmware Emerson ROC809 Hardware series Emerson ROC809L Firmware Emerson ROC827 Firmware

+2 more productsfewer

Emerson ROC827 Hardware series Emerson ROC827L Firmware

affected: mitigation “The Series 1 ROC800 and DL8000 became obsolete in 2008 when the Series 2 was introduced.” www3.emersonprocess.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: 2 y ago (2024-10-21)

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
NVD	3.1	9.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Affected products

Emerson Electric DL8000
Emerson Electric ROC827
Emerson Electric ROC809L
Emerson Electric ROC809

Classification

Weakness

CWE-287 Improper Authentication

References

cisa.gov /news-events/ics-advisories/icsa-23-206-03
third-party-advisory, us-government-resource

Sources

CVE List CVE-2023-1935
NVD CVE-2023-1935

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