Is CVE-2026-20128 in the CISA KEV catalog?

Yes. CVE-2026-20128 is on the CISA Known Exploited Vulnerabilities list, added 2026-04-20.

What is the CVSS severity of CVE-2026-20128?

CVE-2026-20128 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-20128?

CVE-2026-20128 has an EPSS score of 5.27% (91th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-20128

HIGHCISA KEVEPSS 91th pctl

7.5

CVSS v3

NVD

Description

A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.

CWE-257

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

5.27%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-04-23

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-21.