5.4

CVE-2026-20122: Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability

CVSS: 5.4v3.1MediumKEVAnalyzed
Published 25-02-2026Last modified 21-04-2026
Open JSON

Vulnerability summary

CVE-2026-20122 is a medium (CVSS 5.4) Incorrect Use of Privileged APIs vulnerability in Cisco Catalyst SD-WAN Manger. It is known to be exploited: CISA lists it, first on 20-04-2026. EPSS estimates a 25.48% chance of exploitation in the next 30 days, higher than 97.9% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
25.48%
0%100%
High · +0.89 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 Incorrect Use of Privileged APIs 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 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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

25.48%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+0.89 pp

From 24.59% on 19-09-2026

19-09-202619-10-2026
EPSS score
25.48%

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-2026-20122

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, < 20.18.2.1 | 20.12.6
  • cisco catalyst sd-wan manager20.1.12 | 19.2.1 | 18.4.4 | 18.4.5 | 20.11.1 | 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_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 | 20.13.1 | 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 | 20.9.4.1.1 | 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

1 vendor · 2 products

References

2 links