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CVE-2025-66001VulnerabilityPublished

CVE-2025-66001: SUSE neuvector · Improper Certificate Validation

Affects SUSE neuvectorSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High : upgrade to 5.4.8 soon.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.4.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade neuvector and github.com/neuvector/neuvector to 5.4.8.

Affected software

ProductAffectedFixed in
SUSEneuvectorAffected
  • >=5.3.0 <5.4.8
Fixed in
  • 5.4.8
GitHubneuvector/neuvectorpkg:github/neuvector/neuvectorOther threatsAffected
  • =5.3.0
Fixed in–
GitHubgithub.com/neuvector/neuvectorpkg:github/github.com/neuvector/neuvectorOther threatsAffected
  • >=5.3.0 <5.4.8
Fixed in
  • 5.4.8

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations using NeuVector 5.3.0 should immediately audit their OpenID Connect authentication configurations to ensure TLS certificate verification is explicitly enabled and enforced. If the product allows configuration changes, administrators must disable any options that bypass or ignore TLS validation. Network-level mitigations include deploying strict TLS inspection and enforcing mutual TLS where possible to prevent MITM attacks. Organizations should monitor authentication logs for unusual activity indicative of MITM attempts. If you cannot patch yet, consider isolating NeuVector management interfaces behind VPNs or zero-trust network access solutions to reduce exposure. Additionally, implement multi-factor authentication (MFA) for all administrative access to mitigate the impact of credential compromise. Regularly update and patch NeuVector as soon as SUSE releases a fix. Finally, conduct security awareness training for users to recognize suspicious login behaviors and report anomalies promptly.

Description

CVE-2025-66001 is a high-severity vulnerability in SUSE NeuVector version 5.3.0 where TLS verification for OpenID Connect login authentication is not enforced by default. This improper certificate validation (CWE-295) allows attackers to perform man-in-the-middle (MITM) attacks, potentially compromising confidentiality, integrity, and availability of the system. Exploitation requires no privileges but does require user interaction during login. The vulnerability has a CVSS score of 8.8, indicating a high impact with network attack vector and low attack complexity. No known exploits are currently reported in the wild. European organizations using NeuVector 5.3.

References

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