CVE-2026-20191

HIGH 7.5 ALL-YEARS

Published 2026-07-01 · Last modified 2026-07-01 · cisco · NVD: Analyzed

A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.  This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to read arbitrary files from a restricted container of the affected device.

ELEVATED IMPACT

Severe if exploited (CVSS 7.5), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.6%chance of exploitation in 30 days · 51st percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable yes

Impact if exploited

7.5CVSS 3.1 · HIGH · CNA

ConfidentialityHigh
IntegrityNone
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Cisco

Products Cisco Catalyst Center Catalyst Center Catalyst Center Global Manager

Weakness (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Cisco	Catalyst Center	≥ 2.3.7.0 and ≤ 2.3.7.11
Cisco	Catalyst Center	≥ 3.1.3 and < 3.1.6-75524.200
Cisco	Catalyst Center Global Manager	< 1.4.1

All CVSS metrics

HIGH 7.5 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
HIGH 7.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Advisories

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catc-file-read-wLH2vf8X Vendor AdvisoryCVE record · cisco · Updated 2026-07-01T16:27:32.642Z
NVD · CVE-2026-20191 · Updated 2026-10-25T17:10:00.197
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-41078 ADVISORYEUVD · EUVD-2026-41078

Sources: NVD · CVE.org · All sources and attribution · EPSS