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Cisco Secure Email Gateway

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Cisco drops another exploited zero-day, this time a perfect 10

Cisco's CVSS 10.0 CVE-2026-76460 authentication bypass in Identity Services Engine is actively exploited, granting unauthenticated attackers root command execution.

Cisco disclosed CVE-2026-76460 (CVSS 10.0), an authentication bypass in Identity Services Engine (ISE) and ISE-PIC APIs that gives unauthenticated remote attackers command execution with root privileges; CISA added it to the KEV catalog. It follows CVE-2026-76461 (CVSS 9.8), an actively exploited flaw in Cisco Secure Email Gateway and Secure Email and Web Manager disclosed days earlier. Permanent fixes ship in ISE 3.1 Patch 12 through 3.5 Patch 4; ISE 3.0 is end-of-maintenance and ISE 3.1 Patch 12, 3.2 Patch 11, 3.3 Patch 12, 3.4 Patch 7 and 3.5 Patch 4 are available. No workaround exists, though ACLs restricting management traffic can serve as temporary mitigation.

The Register · Securityupdated · 1h agofirst · 2h agoExploit / PoC in the wild 22 sourcesCVE-2026-76460CVE-2026-764611

CVE-2026-76461: Cisco Email Gateway Flaw Exploited

Cisco confirmed active exploitation of CVE-2026-76461, a critical SQL injection flaw in Secure Email Gateway that enables OS command execution.

Cisco has confirmed that attackers are actively exploiting CVE-2026-76461 in Secure Email Gateway. The critical SQL injection vulnerability can lead to operating-system command execution on affected appliances. Organizations running vulnerable versions should prioritize patching.

SOCRadar · 1d agoExploit / PoC in the wild 17 sourcesCVE-2026-76461

Related CVEs

  • Unauthenticated SQL Injection to Root RCE in Cisco Secure Email Gateway
    Cisco AsyncOS Software for Cisco Secure Email Gateway contains a SQL injection flaw (CWE-89) in its email parsing logic, caused by insufficient validation of message content. An unauthenticated, remote attacker can trigger it simply by sending a crafted email containing malicious SQL statements through an affected gateway, with no user interaction required. Successful exploitation allows arbitrary SQL execution that escalates to arbitrary operating-system command execution with root privileges, fully compromising the appliance and all mail flowing through it. Any organization running an affected version of Cisco Secure Email Gateway is impacted, and because these appliances sit on the inbound mail path they are inherently reachable over the network. There is no known public proof-of-concept, the flaw is not on the CISA KEV list, and no in-the-wild exploitation has been reported to date, though the CVSS 9.8 rating makes patching urgent.
    · Cisco Secure Email Gateway (Cisco AsyncOS Software) KEV PoC ×3large
  • Unauthenticated Management Interface Bypass in Cisco ISE and ISE-PIC
    Cisco Identity Services Engine (ISE) and the Cisco ISE Passive Identity Connector (ISE-PIC) contain an incorrect use of privileged APIs flaw (CWE-648) affecting the web-based management interface. An unauthenticated, remote attacker with network access to that interface can send requests that invoke privileged APIs without authenticating, bypassing the interface's access controls. Successful exploitation grants the attacker unauthorized access to the affected device, presumably with the administrative capabilities available through the management interface, such as control over network access policy and visibility into identity data. Any organization running an affected Cisco ISE or ISE-PIC release is potentially affected, with risk highest where the management interface is reachable from untrusted networks. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2026-09-16, indicating exploitation in the wild, though no public proof-of-concept is known and CVSS scoring is pending.
    · Cisco Identity Services Engine (ISE) · Cisco ISE Passive Identity Connector (ISE-PIC) KEV PoC large

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