Newly disclosed vulnerability Common Vulnerabilities and Exposures (CVE)-2026-24858 [Common Weakness Enumeration (CWE)-288: Authentication Bypass Using an Alternate Path or Channel] allows malicious actors with a FortiCloud account and a registered device to log in to separate devices registered to other users in FortiOS, FortiManager, FortiWeb, FortiProxy, and FortiAnalyzer, if FortiCloud single sign on (SSO) is enabled on devices.
Users are vulnerable to CVE-2026-24858 even if they updated Fortinet devices to address previously disclosed FortiCloud SSO bypass vulnerabilities CVE-2025-59718 and CVE-2025-59719 [CWE-347: Improper Verification of Cryptographic Signature]. CVE-2025-59718 and CVE-2025-59719 affect FortiOS, FortiWeb, FortiProxy, and FortiSwitch Manager, and allow malicious actors to bypass the SSO login authentication via a crafted Security Assertion Markup Language (SAML) message.
Read more…
Source: U.S. Cybersecurity and Infrastructure Security Agency
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Cisco Fixes Critical Flaw in Wireless VPN, Firewall Routers
February 27, 2019
Cisco is urging customers to update their wireless VPN and firewall routers, after patching a critical vulnerability that could allow unauthenticated, remote attackers to execute arbitrary code. The vulnerability, CVE-2019-1663, has a CVSS score of 9.8 and impacts the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router. ...
- How to Attack and Defend a Prosthetic Arm
February 26, 2019
The IoT world has long since grown beyond the now-ubiquitous smartwatches, smartphones, smart coffee machines, cars capable of sending tweets and Facebook posts and other stuff like fridges that send spam. Today’s IoT world now boasts state-of-the-art solutions that quite literally help people. Take, for example, the biomechanical prosthetic arm made by Motorica Inc. This ...
- 19-Year Old WinRAR RCE Vulnerability Gets Micropatch Which Keeps ACE Support
February 22, 2019
A micropatch was released to fix a 19-year old arbitrary code execution vulnerability impacting 500 million users of the WinRAR compression tool and to keep ACE support after the app’s devs removed it when they patched the security issue. Nadav Grossman from Check Point Software Technologies was the one who originally found the ACE Path Traversal logical bug in the UNACEV2.DLL library written by ...
- Cisco’s warning: Patch this default Network Assurance Engine password bug
February 13, 2019
Cisco is urging customers to install an update that fixes a high-severity issue affecting its Network Assurance Engine (NAE) for managing data-center networks. The bug, tracked as CVE-2019-1688, could allow an attacker to use a flaw in the password-management system of NAE to knock out an NAE server and cause a denial of service. NAE is an ...
- Snapd Flaw Lets Attackers Gain Root Access On Linux Systems
February 13, 2019
Ubuntu and some other Linux distributions suffer from a severe privilege escalation vulnerability that could allow a local attacker or a malicious program to obtain root privileges and total control over the targeted system. Dubbed “Dirty_Sock” and identified as CVE-2019-7304, the vulnerability was discovered by security researcher Chris Moberly, who privately disclosed it to Canonical, the maker ...
- Siemens Warns of Critical Remote-Code Execution ICS Flaw
February 12, 2019
Siemens has released 16 security advisories for various industrial control and utility products, including a warning for a critical flaw in the WibuKey digital rights management (DRM) solution that affects the SICAM 230 process control system. SICAM 230 is used for a broad range of industrial control system (ICS) applications, including use as an integrated energy system for ...