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:

  • CISA Updates Advisory on Threat Actors Exploiting Multiple CVEs Against Zimbra Collaboration Suite

    October 19, 2022

    CISA and the Multi-State Information Sharing & Analysis Center (MS-ISAC) have updated joint Cybersecurity Advisory AA22-228A: Threat Actors Exploiting Multiple CVEs Against Zimbra Collaboration Suite, originally released August 16, 2022. The advisory has been updated to reference the addition of a new Malware Analysis Report, MAR-10398871.r1.v2. CISA encourages organizations to review the latest update to AA22-228A ...

  • Linux dodges serious Wi-Fi security exploits

    October 17, 2022

    You may recall that Linus Torvalds recently added support for Rust in the Linux kernel. One of the big reasons for adding Rust was to put an end to Linux code memory problems. It can’t come soon enough. Recently, five serious Linux Wi-Fi security holes were uncovered. What did they all have in common? Go ahead, guess? ...

  • Ongoing exploitation of CVE-2022-41352 (Zimbra 0-day)

    October 13, 2022

    On September 10, 2022, a user reported on Zimbra’s official forums that their team detected a security incident originating from a fully patched instance of Zimbra. The details they provided allowed Zimbra to confirm that an unknown vulnerability allowed attackers to upload arbitrary files to up-to-date servers. At the moment, Zimbra has released a patch ...

  • Fortinet warns admins to patch critical authentication bypass bug immediately

    October 7, 2022

    Fortinet has warned administrators to update FortiGate firewalls and FortiProxy web proxies to the latest versions, which address a critical severity vulnerability. The security flaw (tracked as CVE-2022-40684) is an authentication bypass on the administrative interface that could allow remote threat actors to log into unpatched devices. “An authentication bypass using an alternate path or channel ...

  • CISA Releases Three Industrial Control Systems Advisories

    October 7, 2022

    CISA has released three Industrial Control Systems (ICS) advisories on October 11, 2022. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations: ICSA-22-284-01 Altair HyperView Player ICSA-22-284-02 Daikin SVMPC1 and SVMPC2 ICSA-22-284-03 Sensormatic Electronics C-CURE 9000 Read more… Source: ...

  • Microsoft Exchange server zero-day mitigation can be bypassed

    October 3, 2022

    Microsoft has shared mitigations for two new Microsoft Exchange zero-day vulnerabilities tracked as CVE-2022-41040 and CVE-2022-41082, but researchers warn that the mitigation for on-premise servers is far from enough. Threat actors are already chaining both of these zero-day bugs in active attacks to breach Microsoft Exchange servers and achieve remote code execution. Both security flaws were reported ...