Latest cybersecurity reporting from selected sources.

Okta disclosed HollowByte, an 11-byte OpenSSL flaw that lets remote attackers exhaust server memory and trigger denial-of-service attacks. Okta’s Red Team disclosed a denial-of-service vulnerability in OpenSSL they named HollowByte, and the attack payload is exactly 11 bytes. A remote, unauthenticated attacker sends that payload and the server allocates up to 131 KB of memory […]

A vulnerability dubbed HollowByte allows unauthenticated attackers to trigger a denial-of-service (DoS) condition on OpenSSL servers with a malicious payload of just 11 bytes. [...]

Palo Alto Networks patched a high-severity vulnerability that could allow unauthenticated attackers to disable firewall protections in denial-of-service (DoS) attacks. [...]

Unauthenticated Attackers Using Malicious Packet to Crash Devices' PAN-OS SoftwareSecurity giant Palo Alto Networks is pushing updates to fix a denial-of-service vulnerability in its PAN-OS device software that unauthenticated, remote attackers have been actively exploiting. The flaw can be triggered by sending firewalls "a malicious packet," which will crash the devices.

Unauthenticated threat actors can remotely cause a denial-of-service (DoS) cyberattack within the Remote Access VPN software in Cisco's ASA and Firepower software.

Microsoft has revealed two security flaws in Rockwell Automation PanelView Plus that could be weaponized by remote, unauthenticated attackers to execute arbitrary code and trigger a denial-of-service (DoS) condition

Several Cisco products, including IOS, IOS XE, and AP software, need patching against various high-risk security vulnerabilities.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a recently patched critical security flaw in Zyxel gear to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation

Cisco has released updates to address a set of nine security flaws in its Small Business Series Switches that could be exploited by an unauthenticated, remote attacker to run arbitrary code or cause a denial-of-service (DoS) condition

Fortinet has disclosed a "Critical" vulnerability impacting FortiOS and FortiProxy, which allows an unauthenticated attacker to execute arbitrary code or perform denial of service (DoS) on the GUI of vulnerable devices using specially crafted requests. [...]

The flaw would allow a network-based unauthenticated threat actor to perform DoS attacks

Cisco on Wednesday rolled out patches to address eight security vulnerabilities, three of which could be weaponized by an unauthenticated attacker to gain remote code execution (RCE) or cause a denial-of-service (DoS) condition on affected devices

Cisco has fixed critical security vulnerabilities affecting Small Business VPN routers and enabling unauthenticated, remote attackers to execute arbitrary code or commands and trigger denial of service (DoS) conditions on vulnerable devices. [...]

SonicWall has released security updates to contain a critical flaw across multiple firewall appliances that could be weaponized by an unauthenticated, remote attacker to execute arbitrary code and cause a denial-of-service (DoS) condition