CVE-2026-20191Network attack vector

Unauthenticated container file read via path traversal

Published Jul 1, 2026 · Updated Jul 1, 2026

Path traversal in Cisco Catalyst Center allows remote attackers to read arbitrary files from a restricted container through crafted HTTP requests. Cisco has not disclosed the affected endpoint or parameter; it states only that insufficient validation of user-supplied input enables the read. No authentication or special configuration is required, and the reported consequence is limited to disclosure of files accessible within the restricted container.

CVSS severity7.5
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Cisco Catalyst Center allows remote attackers to read arbitrary files from a restricted container through crafted HTTP requests. Cisco has not disclosed the affected endpoint or parameter; it states only that insufficient validation of user-supplied input enables the read. No authentication or special configuration is required, and the reported consequence is limited to disclosure of files accessible within the restricted container.

The record

CVE
CVE-2026-20191
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.3.7.0-VA
  2. Affected versionversion=2.3.7.10-VA
  3. Affected versionversion=2.3.7.5-VA
  4. Affected versionversion=2.3.7.6-VA
  5. Affected versionversion=2.3.7.7-VA
  6. Affected versionversion=2.3.7.9-VA
  7. Affected versionversion=3.1.3
  8. Affected versionversion=3.1.3-VA
  9. Affected versionversion=3.1.5
  10. Affected versionversion=3.1.5-RevUp
  11. Affected versionversion=3.1.5-VA
  12. Affected versionversion=3.1.5-VA on AWS
  13. Affected versionversion=3.1.6
  14. Affected versionversion=3.1.6-BETA
  15. Affected versionversion=3.1.6-GSMU100
  16. Affected versionversion=3.1.6-VA
  17. Affected versionversion=3.1.6-VA-GSMU100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=2.3.7.0-VA; version=2.3.7.10-VA; version=2.3.7.5-VA; version=2.3.7.6-VA; version=2.3.7.7-VA; version=2.3.7.9-VA; version=3.1.3; version=3.1.3-VA; version=3.1.5; version=3.1.5-RevUp; version=3.1.5-VA; version=3.1.5-VA on AWS; version=3.1.6; version=3.1.6-BETA; version=3.1.6-GSMU100; version=3.1.6-VA; version=3.1.6-VA-GSMU100

Published CVSS scores

7.5Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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