Vulnerability Analysis
In-depth guides and analysis on vulnerability analysis from the Safeguard engineering team.
577 articles
CVE-2025-29927: Next.js middleware authorization bypass
A spoofable internal header let attackers skip Next.js middleware outright, bypassing auth and route protection across many production deployments.
React Server Components RCE vulnerability advisory
CVE-2025-29927 lets attackers bypass Next.js middleware auth with a forged header — a chain that can escalate to full RCE on React Server Components apps.
The XZ Utils Backdoor: A Timeline and Technical Post-Mortem
A technical post-mortem of CVE-2024-3094, the XZ Utils backdoor: how a trusted maintainer identity was used to plant a supply chain backdoor in sshd.
CVE-2025-5777 (Citrix Bleed 2): NetScaler Memory Disclosure Deep Dive
A second Citrix Bleed leaks session tokens from NetScaler ADC and Gateway memory. We dissect the buffer over-read and the IR playbook.
Palo Alto PAN-OS CVE-2026-0265: CAS Signature-Verification Auth Bypass (May 2026)
Palo Alto disclosed CVE-2026-0265 on May 13, 2026, a cryptographic-signature-verification flaw in Cloud Authentication Service that bypasses PAN-OS authentication. Researchers claim live GlobalProtect portal bypasses. Full analysis.
CVE-2026-41089: The Unauthenticated Netlogon RCE That Owns Your Domain Controller
CVE-2026-41089 is a CVSS 9.8 unauthenticated remote code execution flaw in Windows Netlogon: an integer overflow in MS-NRPC handshake parsing leads to a stack overflow on domain controllers, with no credentials or user interaction required.
SAP May 2026: Two CVSS 9.6 Bugs Put S/4HANA SQL and Commerce Cloud RCE in the Crosshairs
SAP's May 2026 Patch Day fixed two critical CVSS 9.6 flaws: CVE-2026-34260, an authenticated SQL injection in S/4HANA Enterprise Search, and CVE-2026-34263, an unauthenticated configuration-upload-to-RCE in SAP Commerce Cloud. Both carry cross-scope impact.
Ivanti EPMM CVE-2026-6973: Authenticated RCE on CISA KEV in May 2026
Ivanti disclosed CVE-2026-6973 on May 7, 2026, an improper-input-validation RCE in Endpoint Manager Mobile already seeing limited exploitation. CISA gave federal agencies a three-day patch deadline.
Spring4Shell RCE vulnerability explained CVE-2022-22965
CVE-2022-22965 (Spring4Shell) lets attackers achieve unauthenticated RCE on Spring MVC/Tomcat apps. Here's the CVSS/EPSS/KEV data, timeline, and fixes.
Citrix NetScaler CVE-2026-3055: The SAML Memory-Overread CitrixBleed Echo of 2026
CVE-2026-3055 is an unauthenticated memory overread in NetScaler ADC/Gateway configured as a SAML IdP, CVSS 9.3, exploited since late March 2026 and drawing direct CitrixBleed comparisons. Full analysis.
Text4Shell RCE in Apache Commons Text CVE-2022-42889
CVE-2022-42889 (Text4Shell) is a 9.8-severity RCE in Apache Commons Text 1.5-1.9. Learn affected versions, timeline, and remediation steps.
Log4Shell remediation cheat sheet
A practical, no-fluff Log4Shell remediation cheat sheet: affected versions, CVSS/EPSS/KEV context, timeline, and the exact steps to close CVE-2021-44228.
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