Evidence dossier

CVE-2026-20128

Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability

Exploited in the wild (CISA KEV since Apr 20, 2026). cisco reports CVSS 3.1 7.5. EPSS estimates 6.9% exploit likelihood as of Aug 27, 2026.

66.7–68.2Priority evidence range

Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A 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.

State: PUBLISHED
Published: Feb 25, 2026
Updated: Apr 21, 2026
Evidence coverage: 97%

Evidence chronology

What was known when

Download this view's receipt →

Source dateSource date omittedFirst observed by CASCAJul 19, 2026
CISA-ADP
Record text: CISA ADP Vulnrichment
Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Original evidence ↗
Source dateSource date omittedFirst observed by CASCAJul 19, 2026
cisco
Record text: Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability
Inspect raw assertion
Field
container
Value
Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability
Original evidence ↗
Source dateJul 16, 2026First observed by CASCAJul 19, 2026
CISA KEV
Exploitation cataloged: Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability
Inspect raw assertion
Field
observed_exploitation
Value
Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability
Original evidence ↗
Source dateAug 27, 2026First observed by CASCAAug 27, 2026
FIRST EPSS
EPSS score: 6.94% probability · 93.63th percentile
Inspect raw assertion
Field
model_probability
Value
Probability 0.069430000000; percentile 0.936250000000
Original evidence ↗

ExploitationCatalog member

CISA KEV · catalog date Apr 20, 2026 · first observed Jul 19, 2026

Exploit likelihood6.94%

FIRST EPSS · score date Aug 27, 2026 · 93.6th percentile · first observed Aug 27, 2026

SeverityCVSS 7.5

cisco · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1

Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision: evidence-policy-v1.1.0
Cutoff: Aug 27, 2026
Resolution: None

Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision: evidence-policy-v1.1.0
Cutoff: Aug 27, 2026
Resolution: None

Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision: casca-direct-cvss-eligibility-v1
Cutoff: Aug 27, 2026
Resolution: None

Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision: casca-factor-d-obligations-v1
Cutoff: Aug 27, 2026
Resolution: Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment

Record text

CISA ADP Vulnrichment

Inspect raw assertion

Field: container
Value: CISA ADP Vulnrichment

Source dateSource date omittedFirst observed by CASCAJul 19, 2026Original evidence ↗

ciscoOriginal assertion

Record text

Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability

Inspect raw assertion

Field: container
Value: Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability

Source dateSource date omittedFirst observed by CASCAJul 19, 2026Original evidence ↗

CISA KEVOriginal assertion

Exploitation cataloged

Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

Inspect raw assertion

Field: observed_exploitation
Value: Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

Source dateJul 16, 2026First observed by CASCAJul 19, 2026Original evidence ↗

FIRST EPSSOriginal assertion

EPSS score

6.94% probability · 93.63th percentile

Inspect raw assertion

Field: model_probability
Value: Probability 0.069430000000; percentile 0.936250000000

Source dateAug 27, 2026First observed by CASCAAug 27, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

5Underlying assertions

1Canonical products

5Target assertions

0Constraint assertions

Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries

Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

Search scopeRoleOfficial link state

2 scope groups

cisco · source assertedCiscoCisco Catalyst SD-WAN ManagerDirect source scope

Affected: 20.1.12Affected: 19.2.1Affected: 18.4.4Affected: 18.4.5Affected: 20.1.1.1Affected: 20.1.1Affected: 19.3.0Affected: 19.2.2Affected: 19.2.099Affected: 18.3.6Affected: 18.3.7Affected: 19.2.0Affected: 18.3.8Affected: 19.0.0Affected: 19.1.0Affected: 18.4.302Affected: 18.4.303Affected: 19.2.097Affected: 19.2.098Affected: 17.2.10Affected: 18.3.6.1Affected: 19.0.1aAffected: 18.2.0Affected: 18.4.3Affected: 18.4.1Affected: 17.2.8Affected: 18.3.3.1Affected: 18.4.0Affected: 18.3.1Affected: 17.2.6Affected: 17.2.9Affected: 18.3.4Affected: 17.2.5Affected: 18.3.1.1Affected: 18.3.5Affected: 18.4.0.1Affected: 18.3.3Affected: 17.2.7Affected: 18.3.0Affected: 19.2.3Affected: 18.4.501_ESAffected: 20.3.1Affected: 20.1.2Affected: 19.2.929Affected: 19.2.31Affected: 20.3.2Affected: 19.2.32Affected: 20.3.2.1Affected: 20.3.2.1_927Affected: 18.4.6Affected: 20.3.2_928Affected: 20.3.2_929Affected: 20.4.1.0.1Affected: 20.3.2.1_930Affected: 19.2.4Affected: 20.5.0.1.1Affected: 20.4.1.1Affected: 20.3.3Affected: 19.2.4.0.1Affected: 20.3.2_937Affected: 20.5.1Affected: 20.1.3Affected: 20.3.3.0.4Affected: 20.3.3.1.2Affected: 20.3.3.1.1Affected: 20.4.1.2Affected: 20.3.3.0.2Affected: 20.4.1.1.5Affected: 20.4.1.0.02Affected: 20.3.3.1.7Affected: 20.3.3.1.5Affected: 20.5.1.0.1Affected: 20.3.3.1.10Affected: 20.3.3.0.8Affected: 20.4.2Affected: 20.3.4Affected: 20.3.3.0.14Affected: 19.2.4.0.8Affected: 19.2.4.0.9Affected: 20.3.4.0.1Affected: 20.3.2.0.5Affected: 20.5.1.0.2Affected: 20.6.1.1Affected: 20.6.0.18.3Affected: 20.3.2.0.6Affected: 20.6.0.18.4Affected: 20.4.2.0.2Affected: 20.3.3.0.16Affected: 20.6.1.0.1Affected: 20.3.4.0.6Affected: 20.7.1EFT2Affected: 20.3.4.0.9Affected: 20.3.4.0.11Affected: 20.3.3.0.18Affected: 20.6.2.1Affected: 20.3.4.1Affected: 20.4.2.1Affected: 20.4.2.1.1Affected: 20.3.4.1.1Affected: 20.3.813Affected: 20.3.4.0.19Affected: 20.4.2.2.1Affected: 20.5.1.2Affected: 20.3.814Affected: 20.4.2.2Affected: 20.6.2.2Affected: 20.3.4.2.1Affected: 20.3.4.1.2Affected: 20.3.4.0.20Affected: 20.6.2.2.3Affected: 20.4.2.2.2Affected: 20.6.2.0.4Affected: 20.3.4.0.24Affected: 20.6.2.2.7Affected: 20.3.4.2.2Affected: 20.4.2.2.4Affected: 20.3.5.0.8Affected: 20.3.5.0.9Affected: 20.3.5.0.7Affected: 20.6.3.0.2Affected: 20.9.1EFT2Affected: 20.3.6Affected: 20.3.7Affected: 20.4.2.3Affected: 20.3.5.1Affected: 20.3.4.3Affected: 20.3.3.2Affected: 20.3.7.1Affected: 20.3.4.0.25Affected: 20.6.2.2.4Affected: 20.6.1.2Affected: 20.1.3.1Affected: 20.6.5.1.4Affected: 20.3.8Affected: 20.12.501Affected: 26.1.1

Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion

[{"status": "affected", "version": "20.1.12"}, {"status": "affected", "version": "19.2.1"}, {"status": "affected", "version": "18.4.4"}, {"status": "affected", "version": "18.4.5"}, {"status": "affected", "version": "20.1.1.1"}, {"status": "affected", "version": "20.1.1"}, {"status": "affected", "version": "19.3.0"}, {"status": "affected", "version": "19.2.2"}, {"status": "affected", "version": "19.2.099"}, {"status": "affected", "version": "18.3.6"}, {"status": "affected", "version": "18.3.7"}, {"status": "affected", "version": "19.2.0"}, {"status": "affected", "version": "18.3.8"}, {"status": "affected", "version": "19.0.0"}, {"status": "affected", "version": "19.1.0"}, {"status": "affected", "version": "18.4.302"}, {"status": "affected", "version": "18.4.303"}, {"status": "affected", "version": "19.2.097"}, {"status": "affected", "version": "19.2.098"}, {"status": "affected", "version": "17.2.10"}, {"status": "affected", "version": "18.3.6.1"}, {"status": "affected", "version": "19.0.1a"}, {"status": "affected", "version": "18.2.0"}, {"status": "affected", "version": "18.4.3"}, {"status": "affected", "version": "18.4.1"}, {"status": "affected", "version": "17.2.8"}, {"status": "affected", "version": "18.3.3.1"}, {"status": "affected", "version": "18.4.0"}, {"status": "affected", "version": "18.3.1"}, {"status": "affected", "version": "17.2.6"}, {"status": "affected", "version": "17.2.9"}, {"status": "affected", "version": "18.3.4"}, {"status": "affected", "version": "17.2.5"}, {"status": "affected", "version": "18.3.1.1"}, {"status": "affected", "version": "18.3.5"}, {"status": "affected", "version": "18.4.0.1"}, {"status": "affected", "version": "18.3.3"}, {"status": "affected", "version": "17.2.7"}, {"status": "affected", "version": "18.3.0"}, {"status": "affected", "version": "19.2.3"}, {"status": "affected", "version": "18.4.501_ES"}, {"status": "affected", "version": "20.3.1"}, {"status": "affected", "version": "20.1.2"}, {"status": "affected", "version": "19.2.929"}, {"status": "affected", "version": "19.2.31"}, {"status": "affected", "version": "20.3.2"}, {"status": "affected", "version": "19.2.32"}, {"status": "affected", "version": "20.3.2.1"}, {"status": "affected", "version": "20.3.2.1_927"}, {"status": "affected", "version": "18.4.6"}, {"status": "affected", "version": "20.3.2_928"}, {"status": "affected", "version": "20.3.2_929"}, {"status": "affected", "version": "20.4.1.0.1"}, {"status": "affected", "version": "20.3.2.1_930"}, {"status": "affected", "version": "19.2.4"}, {"status": "affected", "version": "20.5.0.1.1"}, {"status": "affected", "version": "20.4.1.1"}, {"status": "affected", "version": "20.3.3"}, {"status": "affected", "version": "19.2.4.0.1"}, {"status": "affected", "version": "20.3.2_937"}, {"status": "affected", "version": "20.5.1"}, {"status": "affected", "version": "20.1.3"}, {"status": "affected", "version": "20.3.3.0.4"}, {"status": "affected", "version": "20.3.3.1.2"}, {"status": "affected", "version": "20.3.3.1.1"}, {"status": "affected", "version": "20.4.1.2"}, {"status": "affected", "version": "20.3.3.0.2"}, {"status": "affected", "version": "20.4.1.1.5"}, {"status": "affected", "version": "20.4.1.0.02"}, {"status": "affected", "version": "20.3.3.1.7"}, {"status": "affected", "version": "20.3.3.1.5"}, {"status": "affected", "version": "20.5.1.0.1"}, {"status": "affected", "version": "20.3.3.1.10"}, {"status": "affected", "version": "20.3.3.0.8"}, {"status": "affected", "version": "20.4.2"}, {"status": "affected", "version": "20.3.4"}, {"status": "affected", "version": "20.3.3.0.14"}, {"status": "affected", "version": "19.2.4.0.8"}, {"status": "affected", "version": "19.2.4.0.9"}, {"status": "affected", "version": "20.3.4.0.1"}, {"status": "affected", "version": "20.3.2.0.5"}, {"status": "affected", "version": "20.5.1.0.2"}, {"status": "affected", "version": "20.6.1.1"}, {"status": "affected", "version": "20.6.0.18.3"}, {"status": "affected", "version": "20.3.2.0.6"}, {"status": "affected", "version": "20.6.0.18.4"}, {"status": "affected", "version": "20.4.2.0.2"}, {"status": "affected", "version": "20.3.3.0.16"}, {"status": "affected", "version": "20.6.1.0.1"}, {"status": "affected", "version": "20.3.4.0.6"}, {"status": "affected", "version": "20.7.1EFT2"}, {"status": "affected", "version": "20.3.4.0.9"}, {"status": "affected", "version": "20.3.4.0.11"}, {"status": "affected", "version": "20.3.3.0.18"}, {"status": "affected", "version": "20.6.2.1"}, {"status": "affected", "version": "20.3.4.1"}, {"status": "affected", "version": "20.4.2.1"}, {"status": "affected", "version": "20.4.2.1.1"}, {"status": "affected", "version": "20.3.4.1.1"}, {"status": "affected", "version": "20.3.813"}, {"status": "affected", "version": "20.3.4.0.19"}, {"status": "affected", "version": "20.4.2.2.1"}, {"status": "affected", "version": "20.5.1.2"}, {"status": "affected", "version": "20.3.814"}, {"status": "affected", "version": "20.4.2.2"}, {"status": "affected", "version": "20.6.2.2"}, {"status": "affected", "version": "20.3.4.2.1"}, {"status": "affected", "version": "20.3.4.1.2"}, {"status": "affected", "version": "20.3.4.0.20"}, {"status": "affected", "version": "20.6.2.2.3"}, {"status": "affected", "version": "20.4.2.2.2"}, {"status": "affected", "version": "20.6.2.0.4"}, {"status": "affected", "version": "20.3.4.0.24"}, {"status": "affected", "version": "20.6.2.2.7"}, {"status": "affected", "version": "20.3.4.2.2"}, {"status": "affected", "version": "20.4.2.2.4"}, {"status": "affected", "version": "20.3.5.0.8"}, {"status": "affected", "version": "20.3.5.0.9"}, {"status": "affected", "version": "20.3.5.0.7"}, {"status": "affected", "version": "20.6.3.0.2"}, {"status": "affected", "version": "20.9.1EFT2"}, {"status": "affected", "version": "20.3.6"}, {"status": "affected", "version": "20.3.7"}, {"status": "affected", "version": "20.4.2.3"}, {"status": "affected", "version": "20.3.5.1"}, {"status": "affected", "version": "20.3.4.3"}, {"status": "affected", "version": "20.3.3.2"}, {"status": "affected", "version": "20.3.7.1"}, {"status": "affected", "version": "20.3.4.0.25"}, {"status": "affected", "version": "20.6.2.2.4"}, {"status": "affected", "version": "20.6.1.2"}, {"status": "affected", "version": "20.1.3.1"}, {"status": "affected", "version": "20.6.5.1.4"}, {"status": "affected", "version": "20.3.8"}, {"status": "affected", "version": "20.12.501"}, {"status": "affected", "version": "26.1.1"}]

NVD CPE · APPLICATIONciscocatalyst_sd-wan_managerVulnerable target · 5 assertions

Any version (unconstrained) (>= 20.10, < 20.12.5.3); Any version (unconstrained) (>= 20.13, < 20.15.4.2); Any version (unconstrained) (>= 20.16, < 20.18); Any version (unconstrained) (< 20.9.8.2); Version 20.12.6Canonical identity product-7d14d24908e295d99b26952868bcdd8b679a703f05b4aac134d1f85c620f6f52Linked exact

Scope supported

Inspect raw assertions

cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 2
Logic
OR
Version bounds
from including 20.13; through excluding 20.15.4.2
Match ID
d284ea84-6c27-4a9c-bda2-d1c5bf1f2356
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 1
Logic
OR
Version bounds
from including 20.10; through excluding 20.12.5.3
Match ID
adab32b5-239d-4dc0-bf30-a6d72acb3710
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 3
Logic
OR
Version bounds
from including 20.16; through excluding 20.18
Match ID
79b0897e-0ff3-44ca-901f-a10a6921672d
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 4
Logic
OR
Version bounds
No explicit bounds
Match ID
f5b6e170-73b8-4838-93b4-ad258f3bca7c
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 0
Logic
OR
Version bounds
through excluding 20.9.8.2
Match ID
0388bd67-c1ad-4e47-8b1a-22ee1634190e

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-7d14d24908e295d99b26952868bcdd8b679a703f05b4aac134d1f85c620f6f52

Source class: Nvd cpe vulnerable target
Assertions: 5
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

08c53835-e682-4156-851e-ffa701bddc2f23e0762d-43af-408e-b70f-e30ba3d28e2b2539cd6c-0603-4ef7-8124-1fbfb8efe960411675ba-31b3-4f58-82d1-d7177437f4f7476c1d9a-57a1-4696-a9a5-a6ed420fbee4

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class: Direct cve affected
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

53a60258-4955-4985-b0fe-ae1315fb80ea

Assessments

CVSS by origin

7.5

psirt@cisco.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

7.5

ciscoCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

7.5Priority eligible

cisco

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Validation: Valid match
Recomputed: 7.5
Decision reason: Evidence supported
Policy: casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
OSV aggregation and OSV-converted NVD material are not independent corroboration.
Red Hat facts are vendor assertions for the exact supplied products.
Nonmembership and not-yet-observed states are not proof of safety.