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Cisco published a September 2026 hardening release for Cisco Secure Firewall ASA, Secure Firewall Threat Defense (FTD) and Secure Firewall Management Center (FMC) software. It addresses multiple vulnerabilities found during an internal security review. Cisco rates the advisory Critical and states that two of the issues are known to be act…
Cisco disclosed a critical authentication bypass, CVE-2026-76504, in the API session-based authentication management of Cisco Catalyst SD-WAN Manager. An unauthenticated, remote attacker can send a crafted HTTP request and gain access to the API with the privileges of the admin user. Cisco has released software updates and states that no …
Cisco published a security advisory covering multiple vulnerabilities in the web-based management interface and API endpoints of Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem (SSM On-Prem). A remote attacker could exploit them to gain unauthorized access, access sensitive information, cause a denial of service (DoS)…
Cisco disclosed multiple critical vulnerabilities in the Next Generation OAM (NGOAM) feature of Cisco NX-OS Software, affecting Cisco Nexus 3000 Series and Nexus 9000 Series switches. An unauthenticated, remote attacker could execute arbitrary code with root privileges or cause a denial of service (DoS) on an affected device. The flaws ar…
Cisco disclosed a critical vulnerability, CVE-2026-76465, in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series and Nexus 9000 Series switches. An unauthenticated, remote attacker could execute arbitrary code with root privileges or cause a denial of service (DoS) on an af…
Cisco disclosed a critical vulnerability, CVE-2026-76471, in the NX-API feature of Cisco NX-OS Software. An unauthenticated, remote attacker could use it to execute arbitrary code with root privileges or to cause a denial of service on an affected device. Cisco rates the Security Impact as Critical. Software updates are available and no w…
Cisco published a security hardening release for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager (September 2026), fixing multiple vulnerabilities found during an internal security review. Cisco states that two of them are known to be actively exploited. They are described in separate advisories as a SQL injection and an…
Cloudflare published defensive guidance following the disclosure of actively exploited Citrix NetScaler vulnerabilities. CVE-2026-88771 allows unauthenticated command execution on affected appliances, including in the default configuration. CVE-2026-88772 affects configurations using DTLS. Citrix's September 27, 2026 bulletin reported obs…
This SentinelOne weekly roundup covers three developments. The FBI arrested Edward Dubrovsky, a former CYPFER executive, on conspiracy and extortion charges. Kash Patel described him as a suspected co-conspirator of ShinyHunters, though he has not been officially named as one. The FBI says the group breached more than 140 organizations an…
This SentinelOne weekly roundup (Week 41, 2026) covers law enforcement actions, a phishing campaign and an actively exploited vulnerability. The most urgent item is CVE-2026-21589, a critical (CVSS 9.3) unauthenticated arbitrary file access flaw in Atlassian Data Center products. Exploitation attempts began about two hours after a public …
The US Department of Defense has confirmed a breach of the Defense Manpower Data Center (DMDC), one of its main personnel data repositories. The breach exposed sensitive data on roughly 2.76 million people plus about 294,000 deceased individuals. Unauthorised users reportedly accessed files between October 2025 and 16 July 2026, and the i…
In August 2026, Manchester Airports Group (MAG) disclosed a data breach affecting its services. The FulcrumSec hacking group later claimed the incident and published data relating to 8.8M customers of Manchester, Stansted and East Midlands airports. The leaked data includes email addresses and phone numbers, along with airport service rec…
A new dark web identity theft service called Nexus, advertised on the Russian cybercrime forum Exploit on Aug. 31, 2026, is selling scans of more than 153 million driver's licenses from the US and Canada. It also lists over 10 million ID cards, 3 million travel documents and 579,000 medical cards. KrebsOnSecurity's analysis points to the …
Microsoft released updates for at least 974 vulnerabilities in Windows and other software, its largest Patch Tuesday ever. The previous record was 570 fixes in July. The 2026 total now exceeds 2,600, more than double the 2020 record year (1,245), with three months still to go. Microsoft and other large vendors, including Adobe, Cisco, Goo…
Dutch authorities arrested a 24-year-old, reportedly Pepijn van der Stap (alias "Umbreon"), around Sept. 16, 2026 on suspicion of aiding data thefts and extortions by ShinyHunters. Van der Stap was previously convicted in 2023 for data theft and extortion. Days after the arrest, remaining ShinyHunters members escalated, breaching the FBI …
A coordinated attack on the operational technology behind supermarket refrigeration hit hundreds of stores in France from the night of 11-12 October 2026. Intermarché/Netto reported at least 300 affected shops, Coopérative U more than 100 and Carrefour 80, with Monoprix, E.Leclerc and Auchan also reporting impacted stores. Per BFM TV, att…
Mandiant and GTIG attribute exploitation of the critical BeyondTrust Remote Support zero-day CVE-2026-102764 to Armory Castle (formerly tracked as UNC5221), a likely Chinese government-backed espionage group. BeyondTrust dates the first known exploitation to Aug. 29 and says it detected and contained the activity Sept. 28. Only a small nu…
Attackers are actively targeting a critical, maximum-severity server-side request forgery (SSRF) vulnerability in SonicWall SMA 1000 appliances. Dark Reading describes this as a familiar and unwelcome position for SonicWall customers, as the vendor's remote access products have repeatedly been targeted. The available excerpt does not give…
Microsoft's October 2026 Patch Tuesday is described as the largest security update the vendor has ever released. According to Dark Reading, it includes zero-day vulnerabilities, among them defense bypass flaws and unauthenticated remote code execution (RCE) bugs. The article excerpt gives no CVE identifiers, affected product lists, exploi…
A zero-day vulnerability in BeyondTrust Remote Support is being reported as the latest in a run of edge-device bugs under attack. In the same week, vulnerabilities in edge products from Ivanti, Cisco and Palo Alto Networks also came under fire. The article, which is very brief, frames BeyondTrust as joining this group and as continuing th…
