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Vulnerability Analysis
Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability

CVE-2026-20122

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 KEV
CVSS Base Score
5.4
MEDIUM
Exploitability:2.9
Impact Score:2.6
Temporal Score:-
EPSS:7.02%

Threat Intelligence Signals

CISA KEV
YES
KEV Date Added
2026-04-20
Ransomware Use
Unknown
KEV Due Date
2026-04-23
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
7.016%
EPSS Percentile
93.3th pct
GitHub Severity
MODERATE
SSVC Exploitation
SSVC Automatable
Vulnerability Class

Identity & Timeline

Status-
Assigning Authority-
CVSS Version / Source-
Reserved-
Published-
Patch Date (date_public)-
Exploit DB Date-
First GitHub PoC Date-
Last Updated-
Time to Patch (Days to fix)-
Exploit Release Gap-
PoC Release Gap-
Exploit DB ReferencesNone identified

Affected Products & Versions

Vendor Product Affected Versions
No affected products specified.

References

No reference links found.

LINK COPIED TO CLIPBOARD