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Beveilingsadvies; NCSC-2026-0104 [1.0.0]
- Beveiligingsadvies
- NCSC-2026-0104 [1.0.0]
- Publicatie
- 26-03-2026 10:50 (Europe/Amsterdam)
- Prioriteit
- Normaal
- Betreft
- Kwetsbaarheden verholpen in Cisco IOS XE Software
Kenmerken
- Buffer Underwrite ('Buffer Underflow')
- Improper Handling of Syntactically Invalid Structure
- Improper Handling of Missing Values
- Improper Handling of Extra Parameters
- Incorrect Privilege Assignment
- Cleartext Transmission of Sensitive Information
- Uncontrolled Resource Consumption
- Missing Release of Memory after Effective Lifetime
- Missing Reference to Active Allocated Resource
- Improper Validation of Syntactic Correctness of Input
Omschrijving
Cisco heeft kwetsbaarheden verholpen in Cisco IOS XE Software, specifiek voor verschillende producten zoals Catalyst 9000 Series Switches, Catalyst CW9800 Family, en Cisco Meraki.
De kwetsbaarheden omvatten verschillende problemen, zoals een geheugenlek in de IKEv2-implementatie, kwetsbaarheden in de DHCP-snooping functie, en onjuiste verwerking van CAPWAP-pakketten die leiden tot een denial of service. Daarnaast zijn er kwetsbaarheden gerapporteerd die het mogelijk maken voor ongeauthenticeerde aanvallers om toegang te krijgen tot gevoelige apparaatconfiguraties en om privileges te verhogen via de Lobby Ambassador API. Ook zijn er problemen met onjuiste privilege-toewijzingen en een kritieke kwetsbaarheid in de bootloader die lokale of fysieke toegang vereisen voor exploitatie. De SCP-serverfunctie is ook kwetsbaar voor denial of service door onjuiste verwerking van SCP-verzoeken.
Oplossingen
Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Referenties
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-kPEpQGGK
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bootp-WuBhNBxA
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-http-dos-sbv8XRpL
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-dhcpsn-dos-xBn8Mtks#fs
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-lobby-privesc-KwxBqJy
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-mntc-dos-LZweQcyq
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-tls-dos-TVgLDEZL
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe_infodis-6J847uEB
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-scp-dos-duAdXtCg
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-hnX5KGOm
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xe-secureboot-bypass-B6uYxYSZ
CVE's
- CVE-2026-20012 - CVSS (v3) 8.6
- CVE-2026-20084 - CVSS (v3) 8.6
- CVE-2026-20086 - CVSS (v3) 8.6
- CVE-2026-20004 - CVSS (v3) 7.4
- CVE-2026-20115 - CVSS (v3) 6.1
- CVE-2026-20125 - CVSS (v3) 7.7
- CVE-2026-20114 - CVSS (v3) 5.4
- CVE-2026-20110 - CVSS (v3) 6.5
- CVE-2026-20104 - CVSS (v3) 6.1
- CVE-2026-20083 - CVSS (v3) 6.5
Producten
Cisco
Disclaimer
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: 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. 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. 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.