Answer in brief
CVE-2026-20128 records a High severity vulnerability in Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability. The current sources mark it as known exploited. The current feed maps Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Catalyst SD-WAN Managergeneric | 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 || 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 || 20.3.2.1 || 20.3.2.1_927 || 18.4.6 || 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 || 20.5.1 || 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 || 20.4.1.0.02 || 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 || 20.3.4 || 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 || 20.5.1.0.2 || 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 || 20.6.1.0.1 || 20.3.4.0.6 || 20.7.1EFT2 || 20.3.4.0.9 || 20.3.4.0.11 || 20.3.3.0.18 || 20.6.2.1 || 20.3.4.1 || 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 || 20.3.814 || 20.4.2.2 || 20.6.2.2 || 20.3.4.2.1 || 20.3.4.1.2 || 20.3.4.0.20 || 20.6.2.2.3 || 20.4.2.2.2 || 20.6.2.0.4 || 20.3.4.0.24 || 20.6.2.2.7 || 20.3.4.2.2 || 20.4.2.2.4 || 20.3.5.0.8 || 20.3.5.0.9 || 20.3.5.0.7 || 20.6.3.0.2 || 20.9.1EFT2 || 20.3.6 || 20.3.7 || 20.4.2.3 || 20.3.5.1 || 20.3.4.3 || 20.3.3.2 || 20.3.7.1 || 20.3.4.0.25 || 20.6.2.2.4 || 20.6.1.2 || 20.1.3.1 || 20.6.5.1.4 || 20.3.8 || 20.12.501 || 26.1.1 | Not reported |
Published upstream
Feb 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Apr 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Apr 20, 2026
Evidence: source:kev:kev:kev:recordA vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-20128 records a High severity vulnerability in Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability. The current sources mark it as known exploited. The current feed maps Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Catalyst SD-WAN Managergeneric | 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 || 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 || 20.3.2.1 || 20.3.2.1_927 || 18.4.6 || 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 || 20.5.1 || 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 || 20.4.1.0.02 || 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 || 20.3.4 || 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 || 20.5.1.0.2 || 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 || 20.6.1.0.1 || 20.3.4.0.6 || 20.7.1EFT2 || 20.3.4.0.9 || 20.3.4.0.11 || 20.3.3.0.18 || 20.6.2.1 || 20.3.4.1 || 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 || 20.3.814 || 20.4.2.2 || 20.6.2.2 || 20.3.4.2.1 || 20.3.4.1.2 || 20.3.4.0.20 || 20.6.2.2.3 || 20.4.2.2.2 || 20.6.2.0.4 || 20.3.4.0.24 || 20.6.2.2.7 || 20.3.4.2.2 || 20.4.2.2.4 || 20.3.5.0.8 || 20.3.5.0.9 || 20.3.5.0.7 || 20.6.3.0.2 || 20.9.1EFT2 || 20.3.6 || 20.3.7 || 20.4.2.3 || 20.3.5.1 || 20.3.4.3 || 20.3.3.2 || 20.3.7.1 || 20.3.4.0.25 || 20.6.2.2.4 || 20.6.1.2 || 20.1.3.1 || 20.6.5.1.4 || 20.3.8 || 20.12.501 || 26.1.1 | Not reported |
Published upstream
Feb 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Apr 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Apr 20, 2026
Evidence: source:kev:kev:kev:recordA vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
Quoted source text, attributed separately from HOL analysis.