{"basis":"claimed","id":"CVE-2026-20127","name":"Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability","vendorProject":"Cisco","product":"Catalyst SD-WAN Controller and Manager","publishedAt":"2026-02-25","cvss":{"score":10,"severity":"CRITICAL","version":"3.1"},"exploited":{"kevAdded":"2026-02-25","dueDate":"2026-02-27","ransomware":false},"epss":{"score":0.89294,"percentile":0.99783,"date":"2026-11-02"},"coverage":{"cloudflare":{"status":"none","firstOn":null,"daysToRule":null},"aws":{"status":"none","firstOn":null,"daysToRule":null},"azure":{"status":"none","firstOn":null,"daysToRule":null},"google":{"status":"none","firstOn":null,"daysToRule":null},"fastly":{"status":"no_history","firstOn":null,"daysToRule":null},"f5":{"status":"none","firstOn":null,"daysToRule":null},"akamai":{"status":"no_source","firstOn":null,"daysToRule":null},"crs":{"status":"none","firstOn":null,"daysToRule":null}},"title":"Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability","description":"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.\r\n\r\nThis vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric. ","cwes":["CWE-287"],"vendors":[{"vendor":"cloudflare","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"aws","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"azure","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"google","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"fastly","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"f5","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"akamai","status":"no_source","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"crs","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]}],"updatedAt":"2026-11-02T23:17:39.823Z","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total"},"measured":[],"social":{"total":2,"first_seen":"2026-11-02T21:52:49.000Z","daily":[{"day":"2026-10-20","posts":0},{"day":"2026-10-21","posts":0},{"day":"2026-10-22","posts":0},{"day":"2026-10-23","posts":0},{"day":"2026-10-24","posts":0},{"day":"2026-10-25","posts":0},{"day":"2026-10-26","posts":0},{"day":"2026-10-27","posts":0},{"day":"2026-10-28","posts":0},{"day":"2026-10-29","posts":0},{"day":"2026-10-30","posts":0},{"day":"2026-10-31","posts":0},{"day":"2026-11-01","posts":0},{"day":"2026-11-02","posts":2}],"top_posts":[{"source":"bluesky","kind":"post","url":"https://bsky.app/profile/theautomate.bsky.social/post/3mzecphv2fd2t","author":"theautomate.bsky.social","author_name":null,"avatar_url":"https://cdn.bsky.app/img/avatar/plain/did:plc:33mm64ebrehwiaxxnwje23zf/bafkreifuszijmfhakxicwawwmjkq3546jmcpi6k62uob2lsyndfh34vnei","text":"Volt Typhoon hit endpoint management platforms, network management systems and SD-WAN orchestrators across 4 zero-day campaigns. Hundreds of victims. Sessions averaged 4 hours, then every artifact was removed. Ask your IT provider whether CVE-2026-20127 applies to anything in yo…","engagement":0,"posted_at":"2026-11-02T21:52:51.189Z"},{"source":"x","kind":"post","url":"https://x.com/theautomate_io/status/2117374396675321923","author":"theautomate_io","author_name":"The Automate io","avatar_url":"https://pbs.twimg.com/profile_images/2021126595948445704/qaEaIAPY_bigger.jpg","text":"Volt Typhoon ran 4 zero-day campaigns through a covert network targeting endpoint management platforms and SD-WAN orchestrators. Hundreds of victims. Sessions averaged 4 hours, then every artifact was cleaned up. Ask your IT provider about CVE-2026-20127 and CVE-2026-16812.","engagement":0,"posted_at":"2026-11-02T21:52:49.000Z"}],"exploit_repositories":[]}}