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CVE-2026-19682· NVD / CVE Program· CNA tenable

A command injection vulnerability exists in Security Center where a remote, unauthenticated attacker could exploit this issue to execute arb

A command injection vulnerability exists in Security Center where a remote, unauthenticated attacker could exploit this issue to execute arbitrary commands on the underlying operating system with the privileges of the service account.

CriticalCVSS 9.4 · v4.0—No exploit Fix available
Published
Aug 14, 2026
Updated
Aug 19, 2026
EPSS
2.8% · 86th percentile
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Report tools

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Action score

38

Monitor

Low priority for now.

CVSS
37 / 40 · 9.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · tenable
9.9
NVD has not scored this yet; the score shown is the CNA’s.

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

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

Affected systems

VendorProduct
tenablesecurity center

Affected versions

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

  • tenable security centerbefore 6.9.0

Versions reported by the vendor

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

  • Tenable, Inc. Security Center

    • before 6.9.0affected · semver

Same product

tenable: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-19681An authenticated command injection vulnerability exists in Security Center related to file upload processing.
    40Plan
  • CVE-2026-19626Remote Code Execution
    38Monitor
  • CVE-2026-64879A filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inje
    38Monitor
  • CVE-2026-64878Unvalidated input in asset filter parameters allows shell metacharacters to escape command argument handling, resulting in remote code execu
    37Monitor
  • CVE-2026-64877An authenticated non-admin user can exploit a SQL injection flaw in the ticketing REST API to access sensitive data stored in the appliance
    37Monitor
  • CVE-2026-19628Remote Code Execution
    35Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Tenable, Inc. Security Center6.9.0Vendor (CNA)

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+1% in 7 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.

  • CVE-2026-196810 days apartAn authenticated command injection vulnerability exists in Security Center related to file upload processing.
    40Plan
  • CVE-2026-6487924 days apartA filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inje
    38Monitor
  • CVE-2026-6487824 days apartUnvalidated input in asset filter parameters allows shell metacharacters to escape command argument handling, resulting in remote code execu
    37Monitor
  • CVE-2026-196280 days apartRemote Code Execution
    35Monitor
  • CVE-2026-6488124 days apartThe audit file upload handler does not sanitize filenames, allowing shell metacharacters to flow into system command execution.
    35Monitor
  • CVE-2026-196790 days apartImproper Input Validation
    34Monitor

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

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

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

ATT&CK techniques

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Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

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References

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

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