CVE-2023-27856 | Rockwell Automation ThinManager ThinServer Path Traversal Download

In affected versions, path traversal exists when processing a message of type 8 in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to download arbitrary files on the disk drive where ThinServer.exe is installed.

Published: 2023-03-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-27856 is rated Moderate Risk (59.2/100): CVSS High severity, with high exploitation likelihood (EPSS 48.20%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2023-27856

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 2026-05-11 54.73% 48.20% -6.53%
2 2026-04-05 52.38% 54.73% +2.36%
3 2026-03-31 — 52.38% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-27856

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2023-27856

Affected software / configurations for CVE-2023-27856

Vendor Product Version Raw CPE
rockwellautomation thinmanager >= 6.0.0, <= 10.0.2 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager >= 11.0.0, <= 11.0.5 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager >= 11.1.0, <= 11.1.5 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager >= 11.2.0, <= 11.2.6 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager >= 12.0.0, <= 12.0.4 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager >= 12.1.0, <= 12.1.5 cpe:2.3:a:rockwellautomation:thinmanager:*:*:*:*:*:*:*:*
rockwellautomation thinmanager 13.0.0 cpe:2.3:a:rockwellautomation:thinmanager:13.0.0:*:*:*:*:*:*:*
rockwellautomation thinmanager 13.0.1 cpe:2.3:a:rockwellautomation:thinmanager:13.0.1:*:*:*:*:*:*:*

References for CVE-2023-27856

cvelogic Threat Intelligence