CVE-2025-27458 json
CVE-2025-27458
published 2025-07-03 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-19870
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Endress+Hauser Endress+Hauser MEAC300-FNADE4
Classification
- Weakness
-
- CWE-327 Use of a Broken or Risky Cryptographic Algorithm
References
-
sick.com
/psirt
vendor-advisory
-
sick.com
/.well-known/csaf/white/2025/sca-2025-0008.pdf
vendor-advisory
-
sick.com
/.well-known/csaf/white/2025/sca-2025-0008.json
vendor-advisory
-
endress.com
product
-
cisa.gov
/resources-tools/resources/ics-recommended-practices
us-government-resource
-
first.org
/cvss/calculator/3.1
not-applicable
Sources
- CVE List CVE-2025-27458
- NVD CVE-2025-27458
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.