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CVE-2026-20127

A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could explo
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:554f69165c6e795516cb5bef6a806ddea23fc507132141f08827a0d0d379cf6c
Known exploited
CISA KEV
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unknown","product":"Cisco Catalyst SD-WAN Manager","vendor":"Cisco","versions":[{"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"},{"sta…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e7b733d6872e5fa6ff022652c80f234a6aaee26ac24d7d59cbd344a7c0c766d4 · sha256:21a65eef651f1f83… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e7b733d6872e5fa6ff022652c80f234a6aaee26ac24d7d59cbd344a7c0c766d4 · sha256:21a65eef651f1f83… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"cwe"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e7b733d6872e5fa6ff022652c80f234a6aaee26ac24d7d59cbd344a7c0c766d4 · sha256:21a65eef651f1f83… · /containers/cna/problemTypes/0/descriptions/0

Known exploitation assertions

2 source assertions
{"cwes":["CWE-287"],"dateAdded":"2026-02-25","dueDate":"2026-02-27","knownRansomwareCampaignUse":"Unknown","notes":"CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20127","product":"Catalyst SD-WAN Controller and Manager","requiredAction":"P…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:33718a9de29cab858ca837e22b1a75af4db0742b8bb5c3709a874a52a04a0a12 · sha256:635dff916c4092c0… · /vulnerabilities/132
    Open source location →
{"cwes":["CWE-287"],"dateAdded":"2026-02-25","dueDate":"2026-02-27","knownRansomwareCampaignUse":"Unknown","notes":"CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20127","product":"Catalyst SD-WAN Controller and Manager","requiredAction":"P…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:3471172d1cc3b0a61cea52942187928184bd9317789e2822602f4434eaa481e4 · sha256:16acee8334e59e44… · /vulnerabilities/129
    Open source location →

Source references

2 source assertions
{"name":"cisco-sa-sdwan-rpa-EHchtZk","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7b733d6872e5fa6ff022652c80f234a6aaee26ac24d7d59cbd344a7c0c766d4 · sha256:21a65eef651f1f83… · /containers/cna/references/0
{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7b733d6872e5fa6ff022652c80f234a6aaee26ac24d7d59cbd344a7c0c766d4 · sha256:21a65eef651f1f83… · /containers/adp/0/references/0

Attribution and limitations

  • CISA Known Exploited Vulnerabilities JSON: CISA named for provenance; do not use CISA/DHS marks or imply endorsement Source →
  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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