The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies over the weekend to secure their systems against attacks exploiting two critical Citrix NetScaler vulnerabilities. [...]
Roundcube SQL injection CVE-2026-48842 is now being exploited in the wild, putting unpatched webmail servers at risk of database compromise. A Roundcube Webmail vulnerability, tracked as CVE-2026-48842 (CVSS score of 8.1) and patched four months ago, is now being exploited in the wild. The Canadian Centre for Cyber Security added the warning to its advisory […]
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**[Mise à jour du 05 octobre 2026]** Le 4 octobre 2026, Citrix a publié un avis concernant une nouvelle vulnérabilité (CVE-2026-88779) permettant un déni de service à distance. La CISA indique que cette vulnérabilité est activement exploitée. **[Mise à jour du 30 septembre 2026]** Dans un billet...
OpenAI is testing a new always-on assistant called "o", and references to the unannounced feature briefly showed up on the company's website. [...]
On 27 September 2026, Citrix published a security bulletin addressing 8 vulnerabilities affecting customer-managed Citrix NetScaler ADC and Citrix NetScaler Gateway, among which 2 critical unauthenticated Remote Code Execution (RCE) vulnerabilities. Citrix has confirmed active exploitation of these 2 critical vulnerabilities in the wild. CERT-EU recommends updating affected software and running a compromise assessment on those exposed on the internet.
Citrix confirmed two critical NetScaler zero-days were exploited before patches were available, with attackers able to remotely execute code. Citrix confirmed that two critical zero-day vulnerabilities in NetScaler ADC and NetScaler Gateway were exploited before the company released patches. The flaws allow remote code execution, meaning attackers can potentially take control of affected appliances. The […]
Citrix has confirmed that two critical NetScaler remote code execution vulnerabilities, tracked as CVE-2026-88771 and CVE-2026-88772, are being exploited in attacks and that it has released security updates to fix the flaws. [...]
Security Affairs AI-CYBERSECURITY newsletter includes a collection of the best articles and research on AI in the international landscape Artificial intelligence is rapidly changing cybersecurity, reshaping both the techniques used by attackers and the tools available to defenders. AI agents can automate tasks, analyze large amounts of data, discover vulnerabilities and accelerate offensive operations. At […]
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Threat Intel | One Kit, Forty Companies: How a Malware-as-a-Service Platform Used GitHub as a Distribution Network for its Campaign Group Policy hijacked: PAYLOAD ransomware weaponizes Active Directory GPO ChainScript: Tracing a Node.js RAT […]
Wireshark release 4.6.9 fixes 19 vulnerabilities and 16 bugs.
Cloudflare has fixed a vulnerability in Containers and Sandboxes that allowed customers with a Workers Paid account to recover residual data from other customers' containers on the same physical host. [...]
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including international press. OpenAI Agents Accessed US Government Websites Without Authorization Exploit.in Database Reveals the Roots of Today’s Ransomware Ecosystem […]
Anthropic has just announced a new Claude Marketplace, and it brings all AI-related tools into one place, including plugins, connectors, agents, and more. [...]
Kosovo national Ardit Kutleshi pleaded guilty to running Rydox, a cybercrime marketplace that sold stolen identities and credentials for years. Ardit Kutleshi, 28 years old and a citizen of Kosovo, pleaded guilty last week to building and running the cybercrime marketplace Rydox. The Rydox marketplace has been active since February 2016; it facilitated over 7,600 […]
CISA added CVE-2026-65660 to its KEV catalog, giving federal agencies a patching deadline of September 28. The post Microsoft SharePoint Flaw CVE-2026-65660 Now Exploited in Attacks appeared first on SecurityWeek.
Two critical vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway that allow remote code execution have been exploited in the wild, Citrix confirmed on September 27. It released fixes for both, along with six other flaws. One of the two affects every deployment on an affected version, including those in the default configuration. The bulletin came a day after security firm watchTowr
CVE-2026-88771 and CVE-2026-88772, two zero-day vulnerabilities in Citrix NetScaler, have been confirmed as exploited in the wild. Citrix released patches on September 27, 2026. On October 3, Citrix disclosed CVE-2026-88779, an exploited denial of service flaw affecting SAML deployments. Fixing it requires newer builds.Change logUpdate October 4: On October 3, Citrix published security bulletin CTX697174 with fixed versions for CVE-2026-88779, an exploited denial of service vulnerability affect…
The ShinyHunters extortion gang is using a URL-encoding trick to bypass web application firewall rules that mitigate the Oracle PeopleSoft CVE-2026-35273 flaw, allowing the threat actors to resume widespread exploitation of a flaw on vulnerable servers. [...]
The Psychedelic Stealer malware distributed via compromised Ukrainian websites using ClickFix-style Cloudflare verification checks is part of a wider malware-as-a-service (MaaS) platform called Lunex. The new findings come from Ontinue, which described the activity as a four-stage attack chain aimed at targeting Ukrainian-speaking users. "The attack chain begins with a fake CAPTCHA page and
The US and China agreed to set up a communication mechanism for artificial intelligence-related incidents. The post China and US Agree to Establish AI Safety Channel and Continue Trade and Military Talks appeared first on SecurityWeek.
Anthropic's Claude Opus 5.5 appears to be changing how it writes, with new analysis showing fewer obvious AI writing patterns, shorter sentences, and simpler wording compared with Opus 5. [...]
Microsoft has paused the rollout of the KB5002907 Microsoft 365 update after users report that it deactivated, or in some cases completely removed, perpetual Office 2016 and Office 2019 installations. [...]
OpenAI is investigating AI agents that accessed US gov websites without authorization, including an attempted Education Department hack. OpenAI disclosed on Friday that its AI agents had interacted with US government websites in ways nobody planned or authorized, as part of what the company is calling an ongoing review of unexpected model behavior. The affected […]
Exploit.in data shows how a 2005 cybercrime forum helped shape today’s ransomware ecosystem, with users and practices surviving for decades. Ransomnews researcher Dancho Danchev dug up a database dump of Exploit.in covering its first three years, from February 2005 to May 2008, and the numbers inside it tell a story about Russian cybercrime that enforcement […]
Two third-party GitHub Actions previously compromised in a Mini Shai-Hulud campaign were re-enabled by their maintainer and remained accessible for more than a week despite still pointing to malicious code. [...]
OpenAI says its AI agents uploaded user-provided images to third-party image-hosting services while carrying out research and evaluation tasks. [...]
The Windows botnet relies on AI to maintain persistence, using xAI Grok to choose from predefined actions. The post New x47.c Windows Botnet Weaponizes xAI Grok, AI API Draining appeared first on SecurityWeek.
Google is warning of renewed mass exploitation of a known security vulnerability in Oracle PeopleSoft as part of a campaign targeting multiple sectors globally. The ShinyHunters-linked activity involves the weaponization of CVE-2026-35273 (CVSS score: 9.8), a critical security flaw that could result in unauthenticated remote code execution. The vulnerability was first exploited as a zero-day
The way we talk about AI agents is shifting, and the way we implement them requires an even more fundamental shift. While earlier discourse focused on how quickly organizations could stand up agents and how much productivity they could promise, a string of recent incidents, including a widely discussed intrusion at Hugging Face during an evaluation of OpenAI agents, has spurred organizations to
