CRITICALVulnerability
Global

Cisco Warns of Attackers Exploiting Critical Authentication Bypass in SD-WAN Manager

·Source: The Hacker News

Updated:

Executive Summary

Attackers are exploiting a critical flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in an advisory on September 30. The flaw, CVE-2026-76504, could allow a remote attacker with no login access to use the Manager's API as the admin user. Fixed releases are available, and there is no workaround. CVE-2026-76504 carries a

Analysis

Attackers are exploiting a critical flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in an advisory on September 30. The flaw, CVE-2026-76504, could allow a remote attacker with no login access to use the Manager's API as the admin user. Fixed releases are available, and there is no workaround. CVE-2026-76504 carries a

Indicators of Compromise (1)

CVE (1)
CVE-2026-76504
NVDMITRE CVE
Source Attribution

Originally published by The Hacker News on Sep 30, 2026.

Related Threats

CRITICALVulnerability

NVD CRITICAL: CVE-2026-82042 — UTMStack before 11.2.16 contains an authentication bypass vulnerability that all...

UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint without path restriction, constant-time comparison, rate limiting, or audit logging. Attackers who obtai

CVE-2026-82042
NIST NVD
CRITICALVulnerability

NVD CRITICAL: CVE-2026-82041 — UTMStack before 11.2.16 contains a missing authorization vulnerability in UTMInc...

UTMStack before 11.2.16 contains a missing authorization vulnerability in UTMIncidentCommandWebsocket.processCommand(), the handler mapped to the /command/{hostname} STOMP destination, where no role check or command allowlist is applied before forwarding supplied commands. Any authenticated user, regardless of role, can send arbitrary operating-system commands over gRPC to any connected agent, res

CVE-2026-82041
NIST NVD
MEDIUMVulnerability

Friday Squid Blogging: EU is Trying to Fight Unregulated Squid Fishing

The EU is recommending import controls to combat unregulated squid fishing in the Southwest Atlantic. I’m not optimistic. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy.

Schneier on Security