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5.4
CVSS
Medium

CVE-2026-20122

PUBLISHED

Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability

1 day faster than CISA KEV

Exploited in the wild Remote Low complexity No user interaction
Vendor
Cisco
Product
Cisco Catalyst SD-WAN Manager
Published
Feb 25, 2026
EPSS
1.4% · 81% pctl

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Description

A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This vulnerability is 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.

cisa edge

Weaknesses (CWE)

  • CWE-648

    Incorrect Use of Privileged APIs

CVSS scores

CVSS v3.1 5.4 Medium

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

Exploitation status

Exploited in the wild

Recorded 2026-06-01 13:22:22 UTC · CVE

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source Added
CVE First 2026-06-01 13:22 UTC
CISA 2026-06-02 14:01 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • KEV confirmed by CISA