Topic
Fortinet
FBI Issues Alert on Active FortiBleed Campaign Harvesting Credentials from Exposed FortiGate Firewalls
Vulnerabilities & Exploits
AI Agents Trigger Surge in Automated Reports, Forcing Google to Pause Bug Bounty Program
AI Security
Fortinet Releases FortiMail Updates to Patch Zero-Day CVE-2026-104286
Vulnerabilities & ExploitsCritical Zero-Day Vulnerability in FortiMail Allows Unauthenticated File Writes
Fortinet disclosed a critical zero-day vulnerability in its FortiMail email security product that is already being exploited in attacks. The flaw, tracked as CVE-2026-104286, affects the graphical user interface component and stems from improper sanitization of path traversal and NULL byte sequences. Attackers can craft malicious HTTP requests to write arbitrary files to the system without authentication. The vulnerability received a CVSS v3.1 base score of 9.8, classifying it as Critical. Fortinet discovered the issue internally but has also received reports of active exploitation. Planned patches include FortiMail 8.0.2, 7.6.7, and 7.4.9, while users on the 7.2 branch are advised to migrate to 7.4 or later.
Casbaneiro Banking Trojan Targets Financial Institutions in Argentina, Peru, Colombia and Mexico
Fortinet researchers identified a Casbaneiro campaign in August that specifically targets bank customers across four Latin American countries. The infection begins with a PDF attachment that displays the recipient's own email address to build credibility and creates urgency around an unpaid invoice or judicial notice. The PDF link performs IP-based geofencing, redirecting non-target visitors to Google or YouTube while delivering a Base64-encoded ZIP only to victims in the selected countries. Inside the archive, an HTA file downloads the legitimate AutoIt interpreter along with a compiled script and compressed payload, helping evade binary-focused defenses. The malware stays dormant until the victim visits a monitored banking website, at which point it activates its C2 channel, exfiltrates Outlook contact data, and can display bank-specific credential-harvesting overlays. Additional remote-access capabilities allow operators to control the keyboard, manipulate the clipboard, and execute arbitrary commands on the infected system.
CISA Adds Four Actively Exploited Vulnerabilities to KEV Catalog Including Cisco FMC and Fortinet FortiOS
The US Cybersecurity and Infrastructure Security Agency has added four vulnerabilities to its Known Exploited Vulnerabilities catalog, warning that they are being actively exploited in the wild. The flaws affect Cisco Secure Firewall Management Center, Security Cloud Control, Fortinet FortiOS, FortiSwitchManager, and Citrix NetScaler products. One vulnerability allows attackers to bypass authentication and gain root privileges through crafted HTTP requests. Another is a heap-based buffer overflow that enables execution of unauthorized code or commands via specially crafted packets. CISA issued the update on September 9, 2026, urging organizations to apply patches immediately. The agency continues to track these issues as part of its ongoing efforts to mitigate real-world threats.
Building a Cybersecurity News Aggregator: Story Clustering, Seven Importance Signals and Strict Filtering Thresholds
The idea for an information security news aggregator emerged years ago with the goal of delivering only the most relevant stories while eliminating noise. Early versions relied on the rut5_base_sum_gazeta summarization model and TextRank for importance scoring, but performance remained unsatisfactory. The current system processes roughly one thousand items daily from more than 200 sources and publishes only about 0.5 percent of them. A hybrid approach now combines a transparent seven-feature formula that scores story importance with an LLM that removes irrelevant content and generates concise summaries. The formula incorporates signals such as confirmation count, CVSS severity, exploitation status from KEV, source tier, proximity to Russian readers, depth of analysis, and publication speed. Penalties are applied for vendor self-promotion, webinars, and job postings. Stories are clustered using CVE identifiers, shared trigrams, and named entities to avoid duplicate posts while preserving original reporting.
Fortinet Patches Critical Authentication Bypass in FortiWeb Allowing Login with Random Credentials
Fortinet has released security updates addressing multiple vulnerabilities across FortiWeb, FortiManager, and FortiClient products. The most severe issue, tracked as CVE-2026-26035, affects FortiWeb and carries a CVSS score of 8.8. The flaw occurs when administrative accounts configured with remote RADIUS authentication use the wildcard option, which is disabled by default. Under these conditions, an unauthenticated remote attacker can gain administrative access to the web application firewall by supplying arbitrary usernames and passwords. Successful exploitation grants full control over the FortiWeb instance, potentially compromising web application security. The vulnerability impacts FortiWeb versions 8.0, 7.6, 7.4, 7.2, and 7.0, with fixes available in versions 8.0.3, 7.6.7, 7.4.12, and 7.2.13. No active exploitation of the authentication bypass flaws has been observed so far, but the risk of remote administrative access makes immediate patching essential for exposed appliances.
CISA Adds Exploited Flaws in FortiOS and VeloCloud Orchestrator to Known Exploited Vulnerabilities Catalog
The US Cybersecurity and Infrastructure Security Agency has added two actively exploited vulnerabilities to its Known Exploited Vulnerabilities catalog. CVE-2026-16812 affects the on-premises version of Arista VeloCloud Orchestrator and allows OS command injection that can lead to data leakage, tampering, and denial of service. The flaw carries a maximum CVSS v3.1 base score of 10.0 and is rated Critical. CVE-2025-68686 impacts Fortinet FortiOS and can be used to bypass specific patches and steal sensitive information when combined with another vulnerability that grants prior filesystem access. Federal agencies must remediate the VeloCloud issue by July 30 and the FortiOS issue by August 10.
Why Deep Packet Inspection Overestimates Its Reach in Encrypted Networks
Modern encryption has fundamentally limited the effectiveness of Deep Packet Inspection systems, leaving network monitors with only metadata and behavioral patterns rather than actual content. DPI tools can still classify traffic types and apply policies based on visible flow characteristics, but they cannot read messages, files, or credentials inside properly encrypted sessions without explicit TLS inspection. The article details how TLS 1.3, Encrypted Client Hello, and QUIC further reduce passive visibility while corporate inspection remains possible only when endpoint devices trust an organizational certificate. Russian regulatory requirements around TSPU systems are discussed separately from corporate DPI use, with emphasis on the need for technical confirmation rather than assumptions. The piece also clarifies distinctions between DPI, IDS, IPS, and DLP, and explains why machine learning cannot convert metadata into decrypted payloads. Overall, the analysis shows that DPI remains useful for traffic management and known-threat detection where visibility exists, but it cannot serve as a complete security foundation.
CISA Adds Three Exploited Vulnerabilities in FortiSandbox and SharePoint to KEV Catalog
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added three actively exploited vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog on July 16, 2026. Two of the flaws affect Fortinet’s FortiSandbox malware analysis product and involve OS command injection issues that can be triggered via specially crafted HTTP requests without requiring authentication. The third vulnerability impacts Microsoft SharePoint and stems from unsafe deserialization of untrusted data, potentially allowing remote code execution over the network. CISA’s action follows public advisories released by the vendors in April and June 2026. The agency is urging organizations to apply available patches and mitigations immediately to reduce the risk of compromise.