Recoverable DCA Credential Exposure in Cisco Catalyst SD-WAN Manager
CVE-2026-20128 is a vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager. The issue is caused by the presence of a credential file for the DCA user on the affected system, with the password stored in a recoverable form. An attacker can send a crafted HTTP request to read the file containing the DCA password from an affected system. Cisco states that successful exploitation can allow an unauthenticated remote attacker to obtain DCA user privileges; supporting reporting also characterizes the weakness as storage of passwords in a recoverable format. Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
84 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Cisco Catalyst SD-WAN-related flaw that Cisco warned was being abused in the wild.
An authentication bypass vulnerability affecting Cisco Catalyst SD-WAN, observed in active network exploitation attempts.
One of three vulnerabilities in unpatched Cisco Catalyst SD-WAN Infrastructure that were chained together in widespread in-the-wild active exploitation.
A previously reported Cisco Catalyst SD-WAN vulnerability that Cisco says continues to be exploited.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.