KEV Entry

CVE-2026-76504

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2026-76504

2026-09-30 00:00 UTC

Timestamps

2026-09-30

2026-09-30

Scope

Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability | Affected: Cisco / Catalyst SD-WAN Manager | Description: Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request. | Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. | Due date: 2026-10-03 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-webauth-xr8beuuU ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-76504

References
  • {'id': 'CVE-2026-76504', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-76504'}

27ff8fe2-2068-471e-a652-0f5b01af0d18

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-09-30 18:00 UTC

2026-09-30 18:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-177"
  ],
  "date_added": "2026-09-30",
  "due_date": "2026-10-03",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Catalyst SD-WAN Manager",
  "vendorProject": "Cisco",
  "vulnerabilityName": "Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability"
}
 -
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