{ "document": { "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "nl", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." }, { "category": "description", "text": "Cisco heeft een kwetsbaarheid verholpen in de Catalyst SD-WAN Controller en Manager producten.", "title": "Feiten" }, { "category": "description", "text": "De kwetsbaarheid bevindt zich in het peering authenticatiemechanisme, waardoor niet-geauthenticeerde externe aanvallers verhoogde rechten kunnen verkrijgen. Hierdoor kunnen zij netwerkconfiguraties manipuleren en mogelijk netwerkoperaties verstoren.\nMet name SD-WAN controllers die poorten via publieke netwerken bereikbaar hebben lopen een verhoogd risico op misbruik.\n\nCisco meldt bekend te zijn met berichten dat de kwetsbaarheid beperkt en gericht is misbruikt. De verwachting van het NCSC is dat op korte termijn een toename in scan- en misbruikverkeer zal plaatsvinden.", "title": "Interpretaties" }, { "category": "description", "text": "Cisco heeft updates uitgebracht om de kwetsbaarheid te verhelpen. Ook heeft Cisco Indicators of Compromise (IoC's) beschikbaar gesteld om eventueel misbruik te detecteren. Zie bijgevoegde referenties voor meer informatie.", "title": "Oplossingen" }, { "category": "description", "text": "Customers are encouraged to audit the auth.log file, located at /var/log/auth.log, for entries that are related to Accepted publickey for vmanage-admin from unknown or unauthorized IP addresses, as shown in the following example:\n\n`2026-02-10T22:51:36+00:00 vm sshd[804]: Accepted publickey for vmanage-admin from port [REDACTED PORT] ssh2: RSA SHA256:[REDACTED KEY]`\n\nCustomers must check the IP address in the auth.log log file against the configured System IPs that are listed in the Cisco Catalyst SD-WAN Manager web UI in the WebUI > Devices > System IP column.", "title": "Dreigingsinformatie" }, { "category": "general", "text": "high", "title": "Kans" }, { "category": "general", "text": "high", "title": "Schade" }, { "category": "general", "text": "Improper Authentication", "title": "CWE-287" } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "Nationaal Cyber Security Centrum", "namespace": "https://www.ncsc.nl/" }, "references": [ { "category": "external", "summary": "Reference", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW" } ], "title": "Kwetsbaarheid verholpen in Cisco Catalyst SD-WAN Controller en Manager", "tracking": { "current_release_date": "2026-05-15T06:46:01.859850Z", "generator": { "date": "2025-08-04T16:30:00Z", "engine": { "name": "V.A.", "version": "1.3" } }, "id": "NCSC-2026-0157", "initial_release_date": "2026-05-15T06:46:01.859850Z", "revision_history": [ { "date": "2026-05-15T06:46:01.859850Z", "number": "1.0.0", "summary": "Initiele versie" } ], "status": "final", "version": "1.0.0" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-1" } } ], "category": "product_name", "name": "Catalyst SD-WAN" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/*", "product": { "name": "vers:unknown/*", "product_id": "CSAFPID-2" } } ], "category": "product_name", "name": "Catalyst SD-WAN Manager" } ], "category": "vendor", "name": "Cisco" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-20182", "notes": [ { "category": "description", "text": "A critical authentication bypass vulnerability in Cisco Catalyst SD-WAN Controller and Manager allows unauthenticated remote attackers to gain administrative privileges and manipulate network configurations.", "title": "Summary" } ], "product_status": { "known_affected": [ "CSAFPID-1", "CSAFPID-2" ] }, "references": [ { "category": "self", "summary": "CVE-2026-20182 | NCSC-NL Website", "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20182.json" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "baseScore": 10.0, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-1", "CSAFPID-2" ] } ], "title": "CVE-2026-20182" } ] }