importantSYS.SOURCE: The Hacker News• 2026-09-15T11:41:11+05:30

Critical Cisco Secure Email Gateway Vulnerability CVE-2026-76461 Exploited for Root Command Execution

#vulnerability #cisco #network security #exploit

A critical vulnerability in Cisco Secure Email Gateway (CVE-2026-76461) is actively exploited in the wild, enabling remote attackers to execute arbitrary commands with root privileges through crafted email messages. The U.S. CISA has added the flaw to its KEV catalog, mandating federal agencies to apply patches by September 17, 2026.

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

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> EVALUATING SINGLE-NODE LOCAL S3 ALTERNATIVES TO MINIO > PROOF OF THE K-SERVER CONJECTURE VIA WORK FUNCTION ALGORITHM > SENIOR CONTENT ENGINEER ROLE AT LINGO.DEV (YC F24) FOR REMOTE, GLOBAL CANDIDATES > CRITICAL PRIVILEGE ESCALATION VULNERABILITY IN LITESPEED WEB SERVER ENTERPRISE ALLOWS ROOT ACCESS ON SHARED HOSTING > PERSISTENT THOUGHTS ON PAPUA NEW GUINEA'S SOCIO-POLITICAL COMPLEXITIES > CRITICAL CISCO SECURE EMAIL GATEWAY VULNERABILITY CVE-2026-76461 EXPLOITED FOR ROOT COMMAND EXECUTION > CHINA-LINKED THREAT ACTORS EXPLOIT CHROME-WINDOWS ZERO-DAY CHAIN TO DEPLOY GRIMWEDGE AND SUPERSTOMP > LINUX FROM SCRATCH: CUSTOM LINUX SYSTEM CONSTRUCTION GUIDE > US ACKNOWLEDGES DEPLOYMENT OF ORBITAL WEAPONS FOR THE FIRST TIME > NVIDIA CEO JENSEN HUANG'S LIVE CALL WITH TRUMP HIGHLIGHTS AI SAFETY DEBATE> EVALUATING SINGLE-NODE LOCAL S3 ALTERNATIVES TO MINIO > PROOF OF THE K-SERVER CONJECTURE VIA WORK FUNCTION ALGORITHM > SENIOR CONTENT ENGINEER ROLE AT LINGO.DEV (YC F24) FOR REMOTE, GLOBAL CANDIDATES > CRITICAL PRIVILEGE ESCALATION VULNERABILITY IN LITESPEED WEB SERVER ENTERPRISE ALLOWS ROOT ACCESS ON SHARED HOSTING > PERSISTENT THOUGHTS ON PAPUA NEW GUINEA'S SOCIO-POLITICAL COMPLEXITIES > CRITICAL CISCO SECURE EMAIL GATEWAY VULNERABILITY CVE-2026-76461 EXPLOITED FOR ROOT COMMAND EXECUTION > CHINA-LINKED THREAT ACTORS EXPLOIT CHROME-WINDOWS ZERO-DAY CHAIN TO DEPLOY GRIMWEDGE AND SUPERSTOMP > LINUX FROM SCRATCH: CUSTOM LINUX SYSTEM CONSTRUCTION GUIDE > US ACKNOWLEDGES DEPLOYMENT OF ORBITAL WEAPONS FOR THE FIRST TIME > NVIDIA CEO JENSEN HUANG'S LIVE CALL WITH TRUMP HIGHLIGHTS AI SAFETY DEBATE