Vulnerability Analysis
In-depth guides and analysis on vulnerability analysis from the Safeguard engineering team.
577 articles
Log4Shell RCE in Apache Log4j (CVE-2021-44228)
A deep dive into CVE-2021-44228 (Log4Shell): the critical Log4j RCE vulnerability, its timeline, affected versions, and concrete remediation steps.
Apache Struts2 RCE behind the Equifax breach (CVE-2017-5638)
CVE-2017-5638, the Apache Struts2 RCE behind the Equifax breach, exposed 147.9M records. Here's the flaw, timeline, and how to remediate it.
Heartbleed OpenSSL memory disclosure (CVE-2014-0160)
Heartbleed (CVE-2014-0160) let attackers silently read server memory over TLS. Here's the impact, timeline, remediation, and how to detect lingering exposure today.
Sudo Baron Samedit heap overflow (CVE-2021-3156)
A decade-old sudo heap overflow, CVE-2021-3156 (Baron Samedit), let any local user gain root. Here's what's affected and how to fix it.
Spring4Shell RCE in Spring Framework (CVE-2022-22965)
A deep dive into CVE-2022-22965 (Spring4Shell): the critical Spring Framework RCE, its exploitation chain, timeline, and how to remediate it fast.
Log4j second RCE bypass (CVE-2021-45046)
The Log4j 2.15.0 patch for Log4Shell was incomplete. CVE-2021-45046 shows how attackers bypassed it to achieve remote code execution.
Struts2 OGNL injection RCE (CVE-2018-11776)
CVE-2018-11776 lets remote attackers achieve full RCE in Apache Struts2 via OGNL injection in URL namespaces. Impact, timeline, and fixes inside.
OpenSSL CVE-2022-3602: The Critical That Wasn't (But Still Matters)
OpenSSL pre-announced a critical vulnerability that was later downgraded to high severity. The incident revealed as much about our processes as the bug itself.
PHP-FPM/Nginx path disclosure RCE (CVE-2019-11043)
CVE-2019-11043 let attackers gain unauthenticated RCE on PHP-FPM/Nginx stacks via a PATH_INFO underflow. Here's the impact, timeline, and fixes.
Ghostcat Apache Tomcat AJP file read/RCE (CVE-2020-1938)
CVE-2020-1938 'Ghostcat' exposes Apache Tomcat's AJP connector to file read and RCE. Here's the ghostcat tomcat AJP vulnerability impact and how to fix it.
ProxyLogon Microsoft Exchange RCE chain (CVE-2021-26855)
A deep dive into ProxyLogon (CVE-2021-26855 and chain): the unauthenticated Exchange RCE that enabled HAFNIUM and mass ransomware attacks.
PrintNightmare Windows Print Spooler RCE (CVE-2021-34527)
A critical Print Spooler flaw (CVE-2021-34527) enabled unauthenticated SYSTEM-level RCE on nearly every Windows host. Here's what happened and how to fix it.
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