7.5

CVE-2026-20128: Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

CVSS: 7.5v3.1HighKEVAnalyzed
Published 25-02-2026Last modified 21-04-2026
Open JSON

Vulnerability summary

CVE-2026-20128 is a high (CVSS 7.5) vulnerability in Cisco Catalyst SD-WAN Manager. It is known to be exploited: CISA lists it, first on 20-04-2026. EPSS estimates a 7.22% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
7.22%
0%100%
Low · +0.27 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 20-04-2026
    Added to CISA KEVCisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability
  3. 21-04-2026
    Last modifiedVulnerability information updated.
  4. 23-04-2026
    CISA remediation dueApply mitigations per vendor instructions.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

7.22%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

+0.27 pp

From 6.94% on 21-09-2026

21-09-202621-10-2026
EPSS score
7.22%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
20-04-2026
Federal due date
23-04-2026

CISA 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. www.cisa.gov/news-events/… sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v nvd.nist.gov/vuln/detail/CVE-2026-20128

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • catalyst_sd-wan_manager< 20.9.8.2 | ≥ 20.10, < 20.12.5.3 | ≥ 20.13, < 20.15.4.2 | ≥ 20.16, < 20.18 | 20.12.6
  • cisco catalyst sd-wan manager20.1.12 | 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

1 vendor · 2 products

References

2 links