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Latest coverage for Bypass

Stay updated on the latest bypass techniques threatening information security. Discover defenses and trends in system vulnerabilities with our insights.

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Background for this topic.

Bypass describes attacker methods that circumvent specific security controls, such as authentication checks, input validation, or detection systems, without directly exploiting the underlying vulnerability. These techniques often leverage design flaws, misconfigurations, or protocol weaknesses to evade protections like firewalls, multi-factor authentication, or antivirus scanning.

Bypassing controls can enable unauthorized access, data exfiltration, or persistent presence while avoiding alerts, complicating detection and response. Effective defense requires layered security measures, rigorous configuration management, and continuous validation of control effectiveness to identify and close bypass paths before attackers exploit them.

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Attackers are exploiting a critical Gitea flaw (CVE-2026-20896) that bypasses authentication with a single HTTP header, exposing repositories and sensitive data. Sysdig researchers warn that attackers are actively exploiting a critical authentication bypass flaw, tracked as CVE-2026-20896 (CVSS score of 9.8), which affects Gitea official Docker images before version 1.26.3. “CVE-2026-20896 exploited 13 days after […]

Security Affairs 8 Jul 2026, 9:16 a.m. Incident · 4 stories CVE-2026-20896 Authentication Bypass CVE Docker Flaw Research Virtualisation

CERT/CC warns an unpatched backdoor in several Tenda routers lets attackers bypass login and gain full admin access with a hidden password. CERT/CC published an alert documenting an undocumented authentication backdoor in multiple Tenda firmware versions, tracked as CVE-2026-11405. The flaw gives anyone who knows the right password full administrative access to the device’s web […]

Security Affairs 7 Jul 2026, 9:45 p.m. Incident · 5 stories CVE-2026-11405 Authentication Backdoor Bypass CVE Firmware Flaw Patch Routers Warning

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a SimpleHelp flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a SimpleHelp flaw, tracked as CVE-2026-48558 (CVSS score v3.1 of 10.0), to its Known Exploited Vulnerabilities (KEV) catalog. CVE-2026-48558 is a critical authentication bypass vulnerability in SimpleHelp versions 5.5.15 and earlier and […]

Security Affairs 1 Jul 2026, 7:47 a.m. Actively exploited CVE-2026-48558 America Authentication Bypass CISA CVE Flaw Vulnerability

Palo Alto Networks warns that attackers are actively exploiting CVE-2026-0257, a PAN-OS flaw that lets unauthorized users bypass authentication and establish VPN connections. Palo Alto Networks has confirmed active exploitation of CVE-2026-0257, a PAN-OS authentication bypass vulnerability affecting GlobalProtect portals and gateways. Palo Alto Networks addressed the vulnerability on May 13. Two weeks later, cybersecurity firm Rapid7 […]

Security Affairs 15 Jun 2026, 11:11 p.m. Actively exploited CVE-2026-0257 Authentication Bypass CVE Exploit Flaw Palo Alto Networks VPN Vulnerability Warning

CVE-2026-0257 lets attackers forge Palo Alto GlobalProtect auth cookies and bypass VPN login. Exploitation confirmed since May 17. Palo Alto Networks addressed the vulnerability CVE-2026-0257 on May 13. Two weeks later, cybersecurity firm Rapid7 confirmed active exploitation across multiple customer environments. The flaw impacts the GlobalProtect portal and gateway components of Palo Alto Networks PAN-OS […]

Security Affairs 1 Jun 2026, 5:52 a.m. Actively exploited CVE-2026-0257 Bypass CVE Flaw Palo Alto Networks VPN Vulnerability