CVE-2023-1935 | CVE-2023-1935

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.

Published: 2023-08-02 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2023-1935 is rated Moderate Risk (52.6/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.55%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-1935

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.55% +0.53%
2 2025-11-21 0.19% 0.02% -0.17%
3 2025-11-18 0.19%

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-1935

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.4 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.5 [email protected]
9.4 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.5 [email protected]

Weakness enumeration for CVE-2023-1935

Affected software / configurations for CVE-2023-1935

Vendor Product Version Raw CPE
emerson roc809_firmware cpe:2.3:o:emerson:roc809_firmware:*:*:*:*:*:*:*:*
emerson roc827_firmware cpe:2.3:o:emerson:roc827_firmware:*:*:*:*:*:*:*:*
emerson roc809l_firmware cpe:2.3:o:emerson:roc809l_firmware:*:*:*:*:*:*:*:*
emerson roc827l_firmware cpe:2.3:o:emerson:roc827l_firmware:*:*:*:*:*:*:*:*
emerson dl8000_firmware cpe:2.3:o:emerson:dl8000_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-1935

URL Tags
https://www.cisa.gov/news-events/ics-advisories/icsa-23-206-03 Third Party Advisory US Government Resource
cvelogic Threat Intelligence