CVE-2026-20209: cisco catalyst_sd-wan_manager Logging of Excessive Data

CVSS: 5.4v3.1MediumAnalyzed

Published 14-05-2026Last modified 15-05-2026

Vulnerability summary

CVE-2026-20209 is a medium (CVSS 5.4) Logging of Excessive Data vulnerability in cisco catalyst_sd-wan_manager. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.5% of scored vulnerabilities.

Overall risk

22/100

0100

Low · default modelHow is this calculated?

CVSS score

5.4/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.19%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Timeline

14-05-2026
PublishedVulnerability first disclosed.
15-05-2026
Last modifiedVulnerability information updated.

Description

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to elevate their privileges from low to high and perform actions as a high-privileged user. This vulnerability exists because sensitive session information is recorded in audit logs. An attacker could exploit this vulnerability by elevating their read-only permissions in Cisco Catalyst SD-WAN Manager to those of a high-privileged user. A successful exploit could allow the attacker to perform actions as a high-privileged user.

CVSS metrics

2 scores · 2 sources · 1 version

v3.15.4

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 18-09-2026

18-09-202618-10-2026

EPSS score

0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-779Logging of Excessive DataThe product logs too much information, making log files hard to process and possibly hindering recovery efforts or forensic analysis after an attack.

Affected systems

Cisco2 products

catalyst_sd-wan_manager< 20.9.9.1 | ≥ 20.10, < 20.12.5.4 | ≥ 20.12.6, < 20.12.6.2 | ≥ 20.13, < 20.15.4.4 | ≥ 20.15.5, < 20.15.5.2 | ≥ 20.16, < 20.18.2.2 | ≥ 26.1, < 26.1.1.1 | 20.12.7
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 | 26.0.1 | 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 | 20.18.2.1_LI_Images | 20.18.2.1 | 20.15.4.2_LI_Images | 20.15.4.2 | 20.12.6.1 | 20.12.6.1_LI_Images | 20.12.5.3 | 20.12.5.3_LI_Images | 20.9.8.2_LI_Images | 20.9.8.2 | 20.18.3 | 20.18.3_LI_Images | 20.15.5 | 20.15.5_LI_Images | 20.12.7 | 20.12.7_LI_Images | 20.9.9 | 20.9.9_LI_Images

1 vendor · 2 products

References

2 links

sec.cloudapps.cisco.com/security/…Vendor Advisory
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZkNot Applicable

Vulnerability summary

Timeline

Description

CVSS metrics

EPSS trend

Known exploited

Public exploits

Weaknesses

Affected systems

References

Related vulnerabilities