CVE-2026-20122 Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability
MediumCVSS 5.4
EPSS 25.8%
CISA KEV
added 2026-04-20 · due 2026-04-23
Exploited in the wild
- Published
- Updated
- Exploit status
- Exploited in the wild (confirmed)
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 Known Exploited Vulnerability
- Date added
- 2026-04-20
- Due date (FCEB)
- 2026-04-23
- Ransomware use
- Unknown
Required action
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Catalyst SD-WAN Manager | = 20.1.12 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.1.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.3.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.099 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.0.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.1.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.302 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.303 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.097 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.098 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.10 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.6.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.0.1a | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.2.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.1 | No fix listed |
Show 175 more
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Catalyst SD-WAN Manager | = 17.2.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.9 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 17.2.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.3.0 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.501_ES | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.929 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.31 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.32 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2_925 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2.1_927 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 18.4.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.1.2_937 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2_928 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2_929 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2.1_930 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.0.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.4.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2_937 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.1.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.1.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.0.01 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.1.0.02 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.1.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.1.10 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.14 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.4.0.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 19.2.4.0.9 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2.0.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.1.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.17 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.0.18.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.2.0.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.0.18.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.16 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.1.0.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.7.1EFT2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.9 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.11 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.0.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.0.18 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.7.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.813 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.19 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.5.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.814 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.7.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.20 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.2.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.0.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.24 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.2.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.2.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.7.1.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.8.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.5.0.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.5.0.9 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.2.8 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.5.0.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.10 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.7.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.1EFT2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.11 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.14 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.19 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.18 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.6 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.23 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.4.0.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.25 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.5 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.27 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.29 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.31 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.32 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.10.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.33 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.2.0.01 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.1_LI_Images | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.10.1_LI_Images | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.2_LI_Images | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.7 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.5.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.11.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.11.1_LI_Images | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.3_LI_ Images | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.3.0.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.5.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.3.0.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.4.2.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.4.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.38 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.3.0.39 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.5.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.3 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.9.3.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.3.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.5.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.7.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.10.1.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.5.2.1 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.3.4.0.25 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.2.2.4 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.6.1.2 | No fix listed |
| Cisco Catalyst SD-WAN Manager | = 20.11.1.1 | No fix listed |
References
- cisco-sa-sdwan-authbp-qwCX8D4v vendor-advisory
- www.cisa.gov government-resource us-government-resource