CVE-2025-27458
CVE-2025-27458
Description
The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses match it is prooven that the client knows the correct password. Since all VNC communication is unencrypted, an attacker can obtain the challenge and response and try to derive the password from this information.
INFO
Published Date :
July 3, 2025, 12:15 p.m.
Last Modified :
Feb. 6, 2026, 2:39 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-27458
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Ensure all VNC communication is encrypted.
- Enforce the use of strong, complex passwords.
- Regularly rotate VNC passwords.
- Restrict network access to VNC services.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-27458.
| URL | Resource |
|---|---|
| https://sick.com/psirt | Vendor Advisory |
| https://sick.com/psirt | Vendor Advisory |
| https://www.cisa.gov/resources-tools/resources/ics-recommended-practices | US Government Resource |
| https://www.endress.com | Product |
| https://www.first.org/cvss/calculator/3.1 | Not Applicable |
| https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.json | Vendor Advisory |
| https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.pdf | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-27458 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-27458
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-27458 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-27458 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration AND OR *cpe:2.3:o:endress:meac300-fnade4_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:endress:meac300-fnade4:-:*:*:*:*:*:*:* Added Reference Type SICK AG: https://sick.com/psirt Types: Vendor Advisory Added Reference Type SICK AG: https://sick.com/psirt Types: Vendor Advisory Added Reference Type SICK AG: https://sick.com/psirt Types: Vendor Advisory Added Reference Type SICK AG: https://sick.com/psirt Types: Vendor Advisory Added Reference Type SICK AG: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices Types: US Government Resource Added Reference Type SICK AG: https://www.endress.com Types: Product Added Reference Type SICK AG: https://www.first.org/cvss/calculator/3.1 Types: Not Applicable Added Reference Type SICK AG: https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.json Types: Vendor Advisory Added Reference Type SICK AG: https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.pdf Types: Vendor Advisory -
New CVE Received by [email protected]
Jul. 03, 2025
Action Type Old Value New Value Added Description The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses match it is prooven that the client knows the correct password. Since all VNC communication is unencrypted, an attacker can obtain the challenge and response and try to derive the password from this information. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Added CWE CWE-327 Added Reference https://sick.com/psirt Added Reference https://sick.com/psirt Added Reference https://www.cisa.gov/resources-tools/resources/ics-recommended-practices Added Reference https://www.endress.com Added Reference https://www.first.org/cvss/calculator/3.1 Added Reference https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.json Added Reference https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.pdf