CVE-2026-20122

Community ground truth

Field notes & remediation

Verdicts are the quick signal. Notes are the evidence and fixes behind them.

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  Field note · TruePositive EditorialCurated

  Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability — Cisco Catalyst SD-WAN Manager contains an incorrect use of privileged APIs vulnerability due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges. Listed in the CISA KEV catalog (added 2026-04-20) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~7%. Treat it as real and prioritize remediation over triage.

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  Remediation · TruePositive EditorialCurated

  Required action for Cisco Catalyst SD-WAN Manger: 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 set a federal remediation due date of 2026-04-23. After patching, verify the vulnerable path is no longer reachable before closing the finding.