CVE-2026-20128

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

As of , CVE-2026-20128 in Cisco Catalyst SD-WAN Manager is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 20 April 2026
US federal deadline
23 April 20263 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.07Higher than 94% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: sec.cloudapps.cisco.comLinks below, from CISA's entry.

What CISA says to do

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's required action

What the flaw is

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's 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.

The CVE record's description, from cisco

CVE published
25 February 2026
Assigned by
cisco
CVSS
7.5 High (CVSS 3.1, from the CNA)
CWE-257
Storing Passwords in a Recoverable Format
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Catalyst SD-WAN Manager: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2026-76504Hex EncodingCisco Catalyst SD-WAN ManagerPatch nowForensic triage required by CISA; listed in the last 14 days0.02
CVE-2026-20262Directory or Path TraversalCisco Catalyst SD-WAN ManagerPatch soon0.28
CVE-2026-20133Exposure of Sensitive Information to an Unauthorized ActorCisco Catalyst SD-WAN ManagerPatch soon0.32
CVE-2026-20245Improper Encoding or Escaping of OutputCisco Catalyst SD-WAN ManagerPatch soon0.25

Read further