CVE-2023-5719 | Red Lion Crimson Improper Neutralization of Null Byte or NUL Character

The Crimson 3.2 Windows-based configuration tool allows users with administrative access to define new passwords for users and to download the resulting security configuration to a device. If such a password contains the percent (%) character, invalid values will be included, potentially truncating the string if a NUL is encountered. If the simplified password is not detected by the administrator, the device might be left in a vulnerable state as a result of more-easily compromised credentials. Note that passwords entered via the Crimson system web server do not suffer from this vulnerability.

Published: 2023-11-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-5719 is rated Moderate Risk (44.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.09%). 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-2023-5719

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 2025-11-21 0.21% 0.09% -0.12%
2 2025-11-18 0.09% 0.21% +0.12%
3 2025-04-15 — 0.09% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-5719

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
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.
 2.8 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:H)
Serious risk that confidential data gets exposed in a big way.
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 5.9 [email protected]

Weakness enumeration for CVE-2023-5719

Affected software / configurations for CVE-2023-5719

Vendor Product Version Raw CPE
redlion crimson < 3.2 cpe:2.3:a:redlion:crimson:*:*:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0008.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0014.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0015.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0016.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0020.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0021.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0025.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0026.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0030.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0031.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0035.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0036.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0040.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0041.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0044.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0047.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0050.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0051.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0053.0:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0053.1:*:*:*:*:*:*
redlion crimson 3.2 cpe:2.3:a:redlion:crimson:3.2:build_3.2.0053.18:*:*:*:*:*:*

References for CVE-2023-5719

cvelogic Threat Intelligence