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CVE-2025-27457· NVD / CVE Program· CNA SICK AG

All communication between the VNC server and client(s) is unencrypted.

All communication between the VNC server and client(s) is unencrypted. This allows an attacker to intercept the traffic and obtain sensitive data.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Jul 3, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 20th percentile
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Report tools

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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · SICK AG
6.5
1.0 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
endressmeac300-fnade4 firmware
endressmeac300-fnade4

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • endress meac300-fnade4 firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (SICK AG). Independent of NVD's CPE analysis and usually ahead of it.

  • Endress+Hauser Endress+Hauser MEAC300-FNADE4

    • vers:all/*affected

Same product

endress: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-27456The SMB server's login mechanism does not implement sufficient measures to prevent multiple failed authentication attempts within a short ti
    39Monitor
  • CVE-2025-27449The MEAC300-FNADE4 does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, maki
    39Monitor
  • CVE-2025-1710The maxView Storage Manager does not implement sufficient measures to prevent multiple failed authentication attempts within a short time fr
    39Monitor
  • CVE-2025-27459The VNC application stores its passwords encrypted within the registry but uses DES for encryption.
    30Monitor
  • CVE-2025-27458The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption.
    30Monitor
  • CVE-2025-27452The configuration of the Apache httpd webserver which serves the MEAC300-FNADE4 web application, is partly insecure.
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-319 · Cleartext Transmission of Sensitive Information

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records