Microsoft issued patches Tuesday for four more vulnerabilities in on-premises versions of the Exchange Server corporate email platform, one of which is a zero-day flaw.
Exim, one of the most-used message transfer agents, has issued patches for 21 flaws that could put thousands of users at risk of attacks, researchers at security firm Qualys say.
Dell has patched five issues in a firmware update driver that has shipped in millions of laptops, tablets and desktops since 2009. The vulnerabilities apparently have not been exploited in the wild and are not remotely exploitable.
Ivanti, parent company of Pulse Secure, published a permanent fix Monday for a zero-day vulnerability in Pulse Connect Secure VPN products that has been exploited to target U.S. government agencies, critical infrastructure providers and other companies over the last several weeks.
Following news reports of ransomware attackers targeting QNAP Systems' network-attached storage appliances, encrypting users' data and then demanding a ransom, the company is urging users to immediately install a malware remover and run a malware scan.
The economics of vulnerability discoveries and exploits is always evolving, and knowing those dynamics can provide insights into what attackers are doing, says Casey Ellis of Bugcrowd.
SonicWall has patched three zero-day vulnerabilities in the hosted and on-premises versions of its Email Security product after attackers began exploiting them last month. Attackers can exploit the flaws to access email and pivot deeper into organizations' systems, FireEye Mandiant reports.
In an unprecedented action, the FBI is removing web shells from on-premises Microsoft Exchange servers at organizations in at least eight states that were infected in a wave of attacks earlier this year. Security experts offer an analysis of the bold move that the FBI took without notifying the organizations.
Microsoft issued patches for its on-premises Exchange Server software, addressing four new critical vulnerabilities discovered by the National Security Agency. A zero-day vulnerability in Desktop Window Manager was also disclosed and patched.
Forescout Research Labs and the Israeli security firm JSOF have found nine Domain Name System vulnerabilities affecting four TCP/IP stacks that, if exploited, could lead to remote code execution or denial-of-service attacks - potentially on millions of devices.
Researchers have uncovered nine critical vulnerabilities in Rockwell Automation's FactoryTalk AssetCentre product, which, if exploited, potentially could enable attackers to control an OT network. An updated version of the product mitigates the flaws.
Attackers are targeting unpatched SAP applications, and the exploits could lead to the hijacking of the vulnerable systems, data theft and ransomware attacks, SAP and Onapsis Research Labs report. They note that patches for most of the flaws have been available for several years.
The zero-day attacks against Accellion's File Transfer Appliance show that a number of big-name firms continued to use the legacy technology - even though more secure, cloud-based options were available. Evidently, many CISOs didn't see a compelling reason to move on. Of course, now they do.
An attacker added a backdoor to the source code for PHP, an open-source, server-side scripting language used by more than 75% of the world's websites. Core PHP project members say the backdoor was quickly removed.
Users of the OpenSSL crypto library should upgrade immediately to the latest version to eliminate serious flaws that attackers could exploit to shut down servers, some security experts warn.
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