Cisco
CVE-2026-20122
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Catalyst Sd-Wan Manager contains a vulnerability that allows attackers to overwrite arbitrary files on the affected system and gain vmanage user priv (CVSS 5.4).
Technical ContextAI
affects Catalyst Sd-Wan Manager. 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
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Same weakness CWE-648 – Incorrect Use of Privileged APIs
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today