Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

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• cpe cisco/catalyst sd-wan manager20.12.6
• vendor Cisco Catalyst SD-WAN Managerversion unspecified

How to fix CVE-2026-20128

• Recommended remediation

  Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. CISA due date Apr 23, 2026.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Feb 25, 2026 · Catalog

   Detected

   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 c

2. Apr 20, 2026 · CISA KEV

   Known exploited

   Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not av

3. Apr 23, 2026 · CISA KEV

   Remediation due

   Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not av

4. Jun 17, 2026 · Catalog

   Updated

   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 c

5. Jun 17, 2026 · NIST NVD

   Updated

   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 c

Sources

• CISA KEVConfirmed exploitationCVE-2026-20128

  Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.

  cisa.gov
• CVE.orgVulnerability recordCVE-2026-20128

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-20128

  30-day exploitation probability 7.2%

  first.org
• NIST NVDVulnerability recordCVE-2026-20128

  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

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2026-20128

  Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.

  vulncheck.com

References

• VulnCheck exploitation evidence · dashboard.shadowserver.org
• VulnCheck exploitation evidence · dashboard.shadowserver.org
• VulnCheck exploitation evidence · dashboard.shadowserver.org
• VulnCheck exploitation evidence · dashboard.shadowserver.org
• VulnCheck exploitation evidence · dashboard.shadowserver.org
• CISA note · nvd.nist.gov
• CISA note · sec.cloudapps.cisco.com
• US Government Resource · cisa.gov
• CISA note · cisa.gov
• CISA note · cisa.gov

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.