CVE-2026-76461: Critical Cisco Secure Email Gateway Vulnerability Exploited in the Wild


On September 14, 2026, Cisco published a security advisory for CVE-2026-76461, a critical SQL injection vulnerability affecting Cisco AsyncOS Software for Cisco Secure Email Gateway. The vulnerability has a reported CVSS v3.1 base score of 9.8 and could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on an affected appliance.

Cisco Secure Email Gateway, formerly known as IronPort Email Security Appliance, is an enterprise email security product that inspects inbound and outbound email for threats including phishing, malware, spam, and business email compromise. Because affected gateways process externally delivered email as part of their normal operation, exploitation does not require access to an administrative interface or authentication. An attacker can reportedly trigger the vulnerability by sending a specially crafted email through a vulnerable gateway.

Read more…
Source:  Rapid7 News


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Harvard Investigating Security Breach After Cybercrime Group Threatens To Release Stolen Data

    October 14, 2025

    Harvard is investigating a data breach after a Russian-speaking cybercrime organization claimed it was preparing to release information stolen through a vulnerability in a software suite used by the University. Clop, an organization that extorts payments from companies to prevent the release of stolen data, announced the breach on its leak site Saturday. The alleged breach ...

  • RondoDox: From Targeting Pwn2Own Vulnerabilities to Shotgunning Exploits

    October 9, 2025

    The Trend Zero Day Initiative (ZDI) Threat Hunting and Trend Research teams have identified a significant RondoDox botnet campaign that targets a wide range of internet-exposed infrastructure. This campaign consists of over 50 exploits, including unpatched router flaws across over 30 vendors, targeting vulnerabilities found in routers, digital video recorders (DVRs), network video recorders (NVRs), CCTV ...

  • Security bug in India’s income tax portal exposed taxpayers’ sensitive data

    October 7, 2025

    The Indian government’s tax authority has fixed a security flaw in its income tax filing portal that was exposing sensitive taxpayers’ data, TechCrunch has exclusively learned and confirmed with authorities. The flaw, discovered in September by a pair of security researchers Akshay CS and “Viral,” allowed anyone who was logged into the income tax department’s e-Filing ...

  • Oracle patches actively exploited zero-day vulnerability in E-Business Suite

    October 6, 2025

    Oracle has patched a critical vulnerability in E-Business Suite that was actively exploited in data theft attacks by the Clop group. This is a zero-day vulnerability, registered as CVE-2025-61882, which allows remote code execution on affected systems without authentication. The flaw is located in the Concurrent Processing component of Oracle E-Business Suite, in the integration with ...

  • US Air Force admits SharePoint privacy issue as reports trickle out of possible breach

    October 1, 2025

    The US Air Force is reportedly investigating a potential data breach caused by a Microsoft SharePoint issue. A report from The Register revealed the Air Force Personnel Center Directorate of Technology and Information issued a data breach notification shared on social media. “This message is to inform you of a critical Personally Identifiable Information (PII) and ...

  • TOTOLINK X6000R: Three New Vulnerabilities Uncovered

    October 1, 2025

    Palo Alto security researchers have uncovered three vulnerabilities in the firmware of the TOTOLINK X6000R router, version V9.4.0cu.1360_B20241207, released on March 28, 2025: TOTOLINK is a manufacturer of networking products, including routers and other Internet of Things (IoT) devices used by consumers worldwide. The widespread adoption of these products makes their security a critical area of ...