CVE-2026-20245
Cisco — Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability
Cisco · CWE-116 · in CISA KEV since 2026-06-09
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 855 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.253.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
Cisco Catalyst SD-WAN -> 17.2
Affected versions
- catalyst sd-wan manager
< 20.9.9.1>= 20.10 < 20.12.5.4>= 20.12.6 < 20.12.6.2>= 20.13 < 20.15.4.4>= 20.15.5 < 20.15.5.2>= 20.16 < 20.18.2.2>= 26.1 < 26.1.1.120.12.7 - sd-wan vsmart controller
< 20.9.9.1>= 20.10 < 20.12.5.4>= 20.12.6 < 20.12.6.2>= 20.13 < 20.15.4.4>= 20.15.5 < 20.15.5.2>= 20.16 < 20.18.2.2>= 26.1 < 26.1.1.120.12.7
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.253 (97.9th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2026-06-23 · CISA federal deadline · Overdue by 4 months | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by cisco. | Listed | ENISA EUVD |
Description
NVDA vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user. To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.
What CISA says to do