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Hackers exploited a critical Cisco Catalyst SD-WAN flaw, fixed in February, to plant custom malware inside the systems that control an organization's SD-WAN network. The malware, called KeyDrift , is designed to copy the keys that encrypt traffic between sites and store them for later use,  Cisco Talos said  on October 28. Talos calls the attacks historical but does not specify when they occurred or whether any keys were sent. The flaw is tracked as  CVE-2026-20127  and has a CVSS score of 10.0. It allows an unauthenticated remote attacker to bypass authentication and gain administrative privileges on these control systems. On a Controller, the attacker can log in as a high-privileged internal account that is not root. When Cisco  disclosed the flaw in February , Talos tracked its exploitation as UAT-8616, a cluster of activity it said went back to at least 2023. In  Cisco's traditional key exchange , each SD-WAN router periodically generates an AE...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a security flaw impacting Broadcom VMware ESX to its Known Exploited Vulnerabilities ( KEV ) catalog, after CrowdStrike revealed that it had been weaponized by a China-nexus threat actor known as Warp Panda in attacks targeting the U.S. legal sector. The vulnerability in question is CVE-2026-41709 (CVSS score: 2.7), an a case of insufficient logging that could permit permit a malicious actor with admin access to perform certain operations without being logged. In an advisory released in July 2026, Broadcom revealed that the issue was addressed in the following versions - VMware Cloud Foundation SXi-9.1.0.0-25370933 and ESXi-9.0.2.0100-25595025 VMware vSphere Foundation SXi-9.1.0.0-25370933 and ESXi-9.0.2.0100-25595025 VMware ESX ESXi80U3j-25429389 VMware Cloud Foundation 5.2.4 VMware Telco Cloud Platform ESXi80U3j-25429389 The development comes in response to CrowdStrike...

Palo Alto Networks on Wednesday warned that threat actors are exploiting the recently patched PHP2Shell vulnerabilities against publicly-accessible management interfaces. "Active exploitation has been observed targeting the Palo Alto Networks management interface exposed to the internet," the network security company said in an update to its advisory. The vulnerabilities, tracked as CVE-2026-109618 and CVE-2026-109619 (CVSS scores: 9.2), allow attackers to achieve unauthenticated remote code execution on systems running affected versions of PHP. The issues were patched upstream by the PHP Foundation on October 21, 2026, in versions 8.5.12, 8.4.27, 8.3.36, and 8.2.35. The development comes days after Israeli cybersecurity company Dream said it observed a suspected China-nexus threat actor weaponizing the flaws in conjunction with a local privilege escalation bug in the Linux kernel, tracked as Fragnesia (CVE-2026-46300, CVSS score: 7.8), to root 25 servers across t...

The China-nexus cyber espionage group known as Volt Typhoon has been attributed to a now-disrupted covert access network dubbed Silent Train that has been put to use for zero-day exploitation and strategic access. "First identified in late 2023, Silent Train uses rotating chains of compromised SOHO, IoT, and enterprise infrastructure," Lumen Technologies Black Lotus Labs said in a report shared with The Hacker News. "It employs anti-forensic techniques, compartmentalized operations, and post-operation cleanup to minimize detection and attribution." Its main purpose is to facilitate critical attack phases like vulnerability exploitation, credential access, data exfiltration, and to maintain continued access to victim environments. The activity stands out for two main reasons - It singled out entities that could provide scalable access to downstream customers, sensitive networks, or strategic programs. It targeted endpoint management platforms, network...

Third-party Android app stores can now apply to Google for permission to install apps with one tap, without Android's usual confirmation screens, and to update them in the background. To qualify, a store must pass identity checks and send Google  its full catalog , along with every new app and update, for ongoing malware scanning. Approved stores get the features from December 1, but only on devices running Android 17 QPR2 or later in  supported countries , which do not include the US. Today, a user installing apps from a third-party store must first enable the store to install apps, then confirm each install and each update. From December 1, a store in Google's  Registered App Stores program  gets that permission automatically once it is approved, and its updates run in the background under the user's own update settings. Google  announced the program in March , alongside changes it said resolved its disputes with Epic Games. Joining is optional, and sto...

A chain of logic flaws, with no memory corruption, can turn a malicious web page into code running on a Windows computer outside Microsoft Edge's sandbox, a security researcher has shown. Orange Tsai of DEVCORE published the full method on October 28, five months after the chain won $175,000 at the  Pwn2Own Berlin contest  in May. Microsoft fixed the Edge bugs the day after the contest, so an up-to-date browser is not at risk. A browser sandbox is the wall that keeps a web page's code inside the browser and off the rest of the computer. Breaking out of it, and then running a program, is what turns a web bug into full control of the machine. Browser escapes like this almost always rely on memory corruption. This one used none. In his  write-up , Tsai describes a chain built solely from logic errors in how Edge and Windows handle ordinary features, and he says the whole exploit is under 100 lines of code. The result is a universal cross-site scripting (UXSS) primit...

Cybersecurity researchers have disclosed details of what appears to be an artificial intelligence (AI)-assisted attack orchestrated by a suspected China-nexus threat actor that has leveraged the PHP2Shell vulnerabilities to breach exposed systems. The activity, which was observed on October 25, 2026, involved an attacker combining PHP2Shell with a kernel privilege escalation exploit to root 25 servers, including three systems in a U.S. government-affiliated environment. "The affected devices run specific versions of a large vendor's firewall software," cybersecurity firm Dream said . "The attacker then launched attacks against Active Directory. The recovered artifacts confirm credential extraction and directory enumeration." The name of the affected vendor was not disclosed, but the Israeli company said it notified the entity. The attack chain essentially brings together two sets of vulnerabilities impacting PHP and the Linux kernel - PHP2Shell , ...