Cyber Resilience

CVE-2023-33921

MediumPublic PoC

Published: 13 June 2023

Published
13 June 2023
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0017 38.0th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-33921 is a medium-severity Exposed Dangerous Method or Function (CWE-749) vulnerability in Siemens Cpci85 Firmware. Its CVSS base score is 6.8 (Medium).

Operationally, ranked at the 38.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). The affected devices contain an exposed UART console login interface. An attacker with direct physical access could try…

more

to bruteforce or crack the root password to login to the device.

CWE(s)
CWE-749NVD-CWE-Other

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

siemens
cpci85 firmware
≤ v05 · ≤ v05

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CM-7 Least Functionality
addresses: CWE-749

Explicitly prohibiting dangerous or unnecessary functions and services prevents exposure of methods that could be directly exploited.

SC-25 Thin Nodes
addresses: CWE-749

Minimal functionality removes or avoids exposure of dangerous methods and functions.

References