TI-2026-16335 Aliases CVE-2026-20122 GHSA-9qpv-49q8-9chx

Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability

HIGH 84Exploited in the wildCWE-648Published 2026-02-25 · Updated 2026-04-21

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2026-04-20CISA due date 2026-04-23

EPSS 0.25801 97th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Active
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Catalyst SD-WAN Manager	20.1.12; 19.2.1; 18.4.4; 18.4.5; 20.1.1.1; 20.1.1; 19.3.0; 19.2.2; 19.2.099; 18.3.6; 18.3.7; 19.2.0; 18.3.8; 19.0.0; 19.1.0; 18.4.302; 18.4.303; 19.2.097; 19.2.098; 17.2.10; 18.3.6.1; 19.0.1a; 18.2.0; 18.4.3; 18.4.1; 17.2.8; 18.3.3.1; 18.4.0; 18.3.1; 17.2.6; 17.2.9; 18.3.4; 17.2.5; 18.3.1.1; 18.3.5; 18.4.0.1; 18.3.3; 17.2.7; 17.2.4; 18.3.0; 19.2.3; 18.4.501_ES; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 20.3.2_925; 20.3.2.1; 20.3.2.1_927; 18.4.6; 20.1.2_937; 20.4.1; 20.3.2_928; 20.3.2_929; 20.4.1.0.1; 20.3.2.1_930; 19.2.4; 20.5.0.1.1; 20.4.1.1; 20.3.3; 19.2.4.0.1; 20.3.2_937; 20.3.3.1; 20.5.1; 20.1.3; 20.3.3.0.4; 20.3.3.1.2; 20.3.3.1.1; 20.4.1.2; 20.3.3.0.2; 20.4.1.1.5; 20.4.1.0.01; 20.4.1.0.02; 20.3.3.1.7; 20.3.3.1.5; 20.5.1.0.1; 20.3.3.1.10; 20.3.3.0.8; 20.4.2; 20.4.2.0.1; 20.3.4; 20.3.3.0.14; 19.2.4.0.8; 19.2.4.0.9; 20.3.4.0.1; 20.3.2.0.5; 20.6.1; 20.5.1.0.2; 20.3.3.0.17; 20.6.1.1; 20.6.0.18.3; 20.3.2.0.6; 20.6.0.18.4; 20.4.2.0.2; 20.3.3.0.16; 20.3.4.0.5; 20.6.1.0.1; 20.3.4.0.6; 20.6.2; 20.7.1EFT2; 20.3.4.0.9; 20.3.4.0.11; 20.4.2.0.4; 20.3.3.0.18; 20.7.1; 20.6.2.1; 20.3.4.1; 20.5.1.1; 20.4.2.1; 20.4.2.1.1; 20.3.4.1.1; 20.3.813; 20.3.4.0.19; 20.4.2.2.1; 20.5.1.2; 20.3.4.2; 20.3.814; 20.4.2.2; 20.6.2.2; 20.3.4.2.1; 20.7.1.1; 20.3.4.1.2; 20.6.2.2.2; 20.3.4.0.20; 20.6.2.2.3; 20.4.2.2.2; 20.3.5; 20.6.2.0.4; 20.4.2.2.3; 20.3.4.0.24; 20.6.2.2.7; 20.6.3; 20.3.4.2.2; 20.4.2.2.4; 20.7.1.0.2; 20.8.1; 20.3.5.0.8; 20.3.5.0.9; 20.4.2.2.8; 20.3.5.0.7; 20.6.3.0.7; 20.6.3.0.5; 20.6.3.0.10; 20.6.3.0.2; 20.7.2; 20.9.1EFT2; 20.6.3.0.11; 20.6.3.1; 20.6.3.0.14; 20.6.4; 20.9.1; 20.6.3.0.19; 20.6.3.0.18; 20.3.6; 20.9.1.1; 20.6.3.0.23; 20.6.4.0.4; 20.6.3.0.25; 20.6.5; 20.6.3.0.27; 20.9.2; 20.9.2.1; 20.6.3.0.29; 20.6.3.0.31; 20.6.3.0.32; 20.10.1; 20.6.3.0.33; 20.9.2.0.01; 20.9.1_LI_Images; 20.10.1_LI_Images; 20.9.2_LI_Images; 20.3.7; 20.9.3; 20.6.5.1; 20.11.1; 20.11.1_LI_Images; 20.9.3_LI_ Images; 20.6.3.1.1; 20.9.3.0.2; 20.6.5.1.2; 20.9.3.0.3; 20.4.2.3; 20.6.3.2; 20.6.4.1; 20.6.3.0.38; 20.6.3.0.39; 20.3.5.1; 20.3.4.3; 20.9.3.1; 20.3.3.2; 20.6.5.2; 20.3.7.1; 20.10.1.1; 20.6.5.2.1; 20.3.4.0.25; 20.6.2.2.4; 20.6.1.2; 20.11.1.1; 20.9.3.0.5; 20.3.4.0.26; 20.6.5.1.3; 20.6.3.0.40; 20.1.3.1; 20.9.2.2; 20.6.5.2.3; 20.6.5.1.4; 20.6.5.3; 20.6.3.0.41; 20.9.3.0.7; 20.6.5.1.5; 20.9.3.0.4; 20.6.4.0.19; 20.6.5.1.6; 20.9.3.0.8; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.6.5.1.7; 20.9.3.0.12; 20.6.4.2; 20.6.5.5; 20.9.3.2; 20.11.1.2; 20.6.3.4; 20.10.1.2; 20.6.5.1.9; 20.9.3.0.16; 20.6.3.0.45; 20.6.5.1.10; 20.9.3.0.17; 20.6.5.2.4; 20.6.4.0.21; 20.9.3.0.18; 20.6.3.0.46; 20.6.3.0.47; 20.9.2.3; 20.9.3.2_LI_Images; 20.9.3.0.21; 20.9.3.0.20; 20.9.4_LI_Images; 20.9.4; 20.6.5.1.11; 20.12.1; 20.12.1_LI_Images; 20.6.5.1.13; 20.9.3.0.23; 20.6.5.2.8; 20.9.4.1; 20.9.4.1_LI_Images; 20.9.3.0.25; 20.9.3.0.24; 20.6.5.1.14; 20.3.8; 20.6.6; 20.9.3.0.26; 20.6.3.0.51; 20.9.3.0.29; 20.12.2; 20.12.2_LI_Images; 20.6.6.0.1; 20.13.1_LI_Images; 20.9.4.0.4; 20.13.1; 20.9.4.1.1; 20.9.5; 20.9.5_LI_Images; 20.12.3_LI_Images; 20.12.3; 20.9.4.1.3; 20.6.7; 20.9.5.1; 20.9.5.1_LI_Images; 20.9.4.1.6; 20.14.1; 20.14.1_LI_Images; 20.9.5.2; 20.9.5.2.1; 20.9.5.2_LI_Images; 20.12.3.1; 20.12.4; 20.15.1_LI_Images; 20.15.1; 20.9.5.1.4; 20.9.5.2.7; 20.9.5.2.13; 20.9.6; 20.9.6_LI_Images; 20.9.5.2.14; 20.6.8; 20.12.4.0.03; 20.16.1; 20.16.1_LI_Images; 20.12.4_LI_Images; 20.9.5.2.16; 20.12.4.0.4; 20.12.401; 20.9.5.3; 20.9.5.3_LI_Images; 20.12.4.1_LI_Images; 20.12.4.1; 20.9.5.2.21; 20.9.6.0.3; 20.12.4.0.6; 20.15.2_LI_Images; 20.15.2; 20.12.4_Monthly_ES5; 20.12.5; 20.12.5_LI_Images; 20.9.7_LI _Images; 20.9.7; 20.15.3; 20.15.3_ LI _Images; 20.12.501; 20.12.5.1_LI_Images; 20.12.5.1; 20.12.5.2_LI_Images; 20.12.5.2; 20.15.3.1; 20.15.4_LI_Images; 20.15.4; 20.9.7.1_LI _Images; 20.9.7.1; 20.18.1; 20.18.1_LI_Images; 20.12.6_LI_Images; 20.12.6; 20.12.5.1.01; 20.9.8; 20.9.8_LI_Images; 20.18.2; 20.15.4.1_LI_Images; 20.15.4.1; 20.18.2_LI_Images	—	No fix listed	CNA

Cisco Catalyst SD-WAN Manager VendorCisco Affected 20.1.12; 19.2.1; 18.4.4; 18.4.5; 20.1.1.1; 20.1.1; 19.3.0; 19.2.2; 19.2.099; 18.3.6; 18.3.7; 19.2.0; 18.3.8; 19.0.0; 19.1.0; 18.4.302; 18.4.303; 19.2.097; 19.2.098; 17.2.10; 18.3.6.1; 19.0.1a; 18.2.0; 18.4.3; 18.4.1; 17.2.8; 18.3.3.1; 18.4.0; 18.3.1; 17.2.6; 17.2.9; 18.3.4; 17.2.5; 18.3.1.1; 18.3.5; 18.4.0.1; 18.3.3; 17.2.7; 17.2.4; 18.3.0; 19.2.3; 18.4.501_ES; 20.3.1; 20.1.2; 19.2.929; 19.2.31; 20.3.2; 19.2.32; 20.3.2_925; 20.3.2.1; 20.3.2.1_927; 18.4.6; 20.1.2_937; 20.4.1; 20.3.2_928; 20.3.2_929; 20.4.1.0.1; 20.3.2.1_930; 19.2.4; 20.5.0.1.1; 20.4.1.1; 20.3.3; 19.2.4.0.1; 20.3.2_937; 20.3.3.1; 20.5.1; 20.1.3; 20.3.3.0.4; 20.3.3.1.2; 20.3.3.1.1; 20.4.1.2; 20.3.3.0.2; 20.4.1.1.5; 20.4.1.0.01; 20.4.1.0.02; 20.3.3.1.7; 20.3.3.1.5; 20.5.1.0.1; 20.3.3.1.10; 20.3.3.0.8; 20.4.2; 20.4.2.0.1; 20.3.4; 20.3.3.0.14; 19.2.4.0.8; 19.2.4.0.9; 20.3.4.0.1; 20.3.2.0.5; 20.6.1; 20.5.1.0.2; 20.3.3.0.17; 20.6.1.1; 20.6.0.18.3; 20.3.2.0.6; 20.6.0.18.4; 20.4.2.0.2; 20.3.3.0.16; 20.3.4.0.5; 20.6.1.0.1; 20.3.4.0.6; 20.6.2; 20.7.1EFT2; 20.3.4.0.9; 20.3.4.0.11; 20.4.2.0.4; 20.3.3.0.18; 20.7.1; 20.6.2.1; 20.3.4.1; 20.5.1.1; 20.4.2.1; 20.4.2.1.1; 20.3.4.1.1; 20.3.813; 20.3.4.0.19; 20.4.2.2.1; 20.5.1.2; 20.3.4.2; 20.3.814; 20.4.2.2; 20.6.2.2; 20.3.4.2.1; 20.7.1.1; 20.3.4.1.2; 20.6.2.2.2; 20.3.4.0.20; 20.6.2.2.3; 20.4.2.2.2; 20.3.5; 20.6.2.0.4; 20.4.2.2.3; 20.3.4.0.24; 20.6.2.2.7; 20.6.3; 20.3.4.2.2; 20.4.2.2.4; 20.7.1.0.2; 20.8.1; 20.3.5.0.8; 20.3.5.0.9; 20.4.2.2.8; 20.3.5.0.7; 20.6.3.0.7; 20.6.3.0.5; 20.6.3.0.10; 20.6.3.0.2; 20.7.2; 20.9.1EFT2; 20.6.3.0.11; 20.6.3.1; 20.6.3.0.14; 20.6.4; 20.9.1; 20.6.3.0.19; 20.6.3.0.18; 20.3.6; 20.9.1.1; 20.6.3.0.23; 20.6.4.0.4; 20.6.3.0.25; 20.6.5; 20.6.3.0.27; 20.9.2; 20.9.2.1; 20.6.3.0.29; 20.6.3.0.31; 20.6.3.0.32; 20.10.1; 20.6.3.0.33; 20.9.2.0.01; 20.9.1_LI_Images; 20.10.1_LI_Images; 20.9.2_LI_Images; 20.3.7; 20.9.3; 20.6.5.1; 20.11.1; 20.11.1_LI_Images; 20.9.3_LI_ Images; 20.6.3.1.1; 20.9.3.0.2; 20.6.5.1.2; 20.9.3.0.3; 20.4.2.3; 20.6.3.2; 20.6.4.1; 20.6.3.0.38; 20.6.3.0.39; 20.3.5.1; 20.3.4.3; 20.9.3.1; 20.3.3.2; 20.6.5.2; 20.3.7.1; 20.10.1.1; 20.6.5.2.1; 20.3.4.0.25; 20.6.2.2.4; 20.6.1.2; 20.11.1.1; 20.9.3.0.5; 20.3.4.0.26; 20.6.5.1.3; 20.6.3.0.40; 20.1.3.1; 20.9.2.2; 20.6.5.2.3; 20.6.5.1.4; 20.6.5.3; 20.6.3.0.41; 20.9.3.0.7; 20.6.5.1.5; 20.9.3.0.4; 20.6.4.0.19; 20.6.5.1.6; 20.9.3.0.8; 20.6.3.3; 20.3.7.2; 20.6.5.4; 20.6.5.1.7; 20.9.3.0.12; 20.6.4.2; 20.6.5.5; 20.9.3.2; 20.11.1.2; 20.6.3.4; 20.10.1.2; 20.6.5.1.9; 20.9.3.0.16; 20.6.3.0.45; 20.6.5.1.10; 20.9.3.0.17; 20.6.5.2.4; 20.6.4.0.21; 20.9.3.0.18; 20.6.3.0.46; 20.6.3.0.47; 20.9.2.3; 20.9.3.2_LI_Images; 20.9.3.0.21; 20.9.3.0.20; 20.9.4_LI_Images; 20.9.4; 20.6.5.1.11; 20.12.1; 20.12.1_LI_Images; 20.6.5.1.13; 20.9.3.0.23; 20.6.5.2.8; 20.9.4.1; 20.9.4.1_LI_Images; 20.9.3.0.25; 20.9.3.0.24; 20.6.5.1.14; 20.3.8; 20.6.6; 20.9.3.0.26; 20.6.3.0.51; 20.9.3.0.29; 20.12.2; 20.12.2_LI_Images; 20.6.6.0.1; 20.13.1_LI_Images; 20.9.4.0.4; 20.13.1; 20.9.4.1.1; 20.9.5; 20.9.5_LI_Images; 20.12.3_LI_Images; 20.12.3; 20.9.4.1.3; 20.6.7; 20.9.5.1; 20.9.5.1_LI_Images; 20.9.4.1.6; 20.14.1; 20.14.1_LI_Images; 20.9.5.2; 20.9.5.2.1; 20.9.5.2_LI_Images; 20.12.3.1; 20.12.4; 20.15.1_LI_Images; 20.15.1; 20.9.5.1.4; 20.9.5.2.7; 20.9.5.2.13; 20.9.6; 20.9.6_LI_Images; 20.9.5.2.14; 20.6.8; 20.12.4.0.03; 20.16.1; 20.16.1_LI_Images; 20.12.4_LI_Images; 20.9.5.2.16; 20.12.4.0.4; 20.12.401; 20.9.5.3; 20.9.5.3_LI_Images; 20.12.4.1_LI_Images; 20.12.4.1; 20.9.5.2.21; 20.9.6.0.3; 20.12.4.0.6; 20.15.2_LI_Images; 20.15.2; 20.12.4_Monthly_ES5; 20.12.5; 20.12.5_LI_Images; 20.9.7_LI _Images; 20.9.7; 20.15.3; 20.15.3_ LI _Images; 20.12.501; 20.12.5.1_LI_Images; 20.12.5.1; 20.12.5.2_LI_Images; 20.12.5.2; 20.15.3.1; 20.15.4_LI_Images; 20.15.4; 20.9.7.1_LI _Images; 20.9.7.1; 20.18.1; 20.18.1_LI_Images; 20.12.6_LI_Images; 20.12.6; 20.12.5.1.01; 20.9.8; 20.9.8_LI_Images; 20.18.2; 20.15.4.1_LI_Images; 20.15.4.1; 20.18.2_LI_Images Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager::::::::	before 20.9.8.2; 20.10 to before 20.12.5.3; 20.13 to before 20.15.4.2; 20.16 to before 20.18.2.1	Vulnerable	Cisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:::::::*	20.12.6	Vulnerable	Cisco

cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* Versions before 20.9.8.2; 20.10 to before 20.12.5.3; 20.13 to before 20.15.4.2; 20.16 to before 20.18.2.1 Vulnerable ·Cisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:* Versions 20.12.6 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-04-20 Added to CISA KEV
2026-10-02 Threatist record created from CVE-2026-20122
2026-10-03 Alias added: GHSA-9qpv-49q8-9chx

References

Advisory 1

cisco-sa-sdwan-authbp-qwCX8D4v

TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16340 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16436 Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
TI-2022-05334 Cisco SD-WAN Software Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
TI-2026-16341 Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability KEVCVSS 3.1HIGH 7.5

See all 91 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences