CISA added CVE-2026-76461, a SQL injection flaw in the Cisco email security appliance, to its Known Exploited Vulnerabilities catalog on 2026-09-14. Federal agencies have until 2026-09-17 to apply vendor mitigations under BOD 26-04, with forensic triage required.
The flaw could let an unauthenticated remote attacker run arbitrary commands with root privileges on the underlying operating system.
It remains unknown whether the vulnerability is known to be used in ransomware campaigns.
Organizations running Cisco SEG should treat this as an immediate priority given confirmed active exploitation and the root-privilege impact.
Tap a lens to see what this story means for you.
Liked this? The Brief brings you the whole day in tech, verified, every morning.
Two minutes, free forever. What's in The Brief →
See what’s happening right now
The Feed runs all day — short, verified briefs the moment they break.
Open the FeedFollow @thecircuitry_
Every story we publish, as it happens. No noise between.
Reader-supported
The Circuitry is a passion project I've always wanted to build, and I love the work behind it.
Running it costs real money. APIs, hosting, time. To keep improving the site and growing this into something useful for everyone, those costs have to be covered.
Any contribution is appreciated. If not, no pressure. Thanks for reading.
Cisco has released NX-OS hardening updates covering CVE-2026-76455, a group of improper access control issues (CWE-284) scored 9.8 critical. Cisco found the issues in an internal review and says they are not known to be exploited.
Cisco has released hardening updates for Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem (SSM On-Prem), to fix CVE-2026-76482, a critical vulnerability with a CVSS score of 10. The flaw stems from improper input verification and was identified during an internal security review.
A critical vulnerability tracked as CVE-2026-76465 affects the MPLS OAM feature in Cisco NX-OS on Nexus 3000 and 9000 Series Switches. The flaw allows unauthenticated remote attackers to execute arbitrary code with root privileges or trigger denial-of-service conditions.
Microsoft has disclosed CVE-2026-83947, a CVSS 7.7 HIGH spoofing vulnerability in Azure Event Grid caused by missing authorization. Microsoft says it has already fully mitigated the cloud-service flaw and customers have nothing to do.
A critical vulnerability CVE-2026-77900 affects Microsoft Azure App Service for Linux with a CVSS score of 9.8. The flaw allows an unauthenticated attacker to execute code over the network. Microsoft says it has already fully mitigated the flaw; no customer action is needed.
