Attackers exploit a critical Cisco email gateway flaw to gain root access. Cisco urges customers to update scanner tools and check for compromise. Cisco confirmed this week that threat actors are exploiting a critical vulnerability in Cisco Secure Email Gateway, tracked as CVE-2026-76519 with a CVSS score of 9.8. An attacker can exploit the flaw […]

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.  CVE-2026-0322 Palo Alto Networks PAN-OS Code Injection Vulnerability  CVE-2026-76519 Cisco Secure Email Gateway Relative Path Traversal Vulnerability CVE-2026-105133 Ahsay AhsayCBS Improper Authentication Vulnerability  CVE-2026-105134 Ahsay AhsayCBS Command Injection Vulnerability  These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.  Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.  While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability mana...

Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Cisco Secure Email Gateway flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Cisco Secure Email Gateway flaw, tracked as CVE-2026-76461 (CVSS score of 9,8), to its Known Exploited Vulnerabilities (KEV) catalog. Cisco disclosed a critical zero-day CVE-2026-76461 this week; […]

Cisco warns of a critical zero-day in Secure Email Gateway, exploited in the wild to gain root access through malicious emails. Cisco disclosed a critical zero-day, tracked as CVE-2026-76461 (CVSS score of 9.8), affecting Secure Email Gateway appliances. The flaw can be exploited remotely without authentication. Attackers can send specially crafted emails containing malicious SQL […]

Attackers have leveraged a zero-day SQL injection vulnerability (CVE-2026-76461) to compromise Cisco Secure Email Gateway appliances, Cisco confirmed on Monday. The vendor’s Product Security Incident Response Team became aware of active exploitation of this vulnerability in September 2025, and has shared indicators of compromise that organizations can look for to check whether they’ve been hit. About CVE-2026-76461 The vulnerability affects versions 16.5, 16.0, and 15.5 and earlier of Cisco AsyncOS Software, running on on-premises physical … More → The post Cisco patches actively exploited email gateway zero-day (CVE-2026-76461) appeared first on Help Net Security .

Cisco has warned that a new critical vulnerability impacting AsyncOS Software for Cisco Secure Email Gateway has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-76461, carries a CVSS score of 9.8 out of a maximum of 10.0. It has been described as a case of insufficient validation in the email parsing logic that could allow an unauthenticated, remote attacker

Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system.