Medium severity · published Aug 14, 2026
CVE-2026-19639
Improper Access Control
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
An improper access control vulnerability exists where an authenticated non-administrative application user could potentially view settings outside of their assigned scope.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Security Center · Tenable, Inc.
before 6.9.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19639
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19639
Vendor Advisory
https://www.tenable.com/security/tns-2026-22
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