cisa-kev
Safeguard articles tagged "cisa-kev" — guides, analysis, and best practices for software supply chain and application security.
29 articles
Continuous vulnerability management: the discovery-to-verification lifecycle
CISA's new BOD 26-04 gives federal agencies as little as 3 days to remediate the highest-risk flaws — a preview of the SLA pressure every engineering org now faces.
Exploitability vs. breakability: a practical rubric for vulnerability triage
CVSS says a flaw could be bad. CISA's KEV catalog, now past 1,300 entries, says one actually was exploited. Most teams still triage as if the two are the same.
Prioritizing vulnerabilities by real-world risk, not raw CVSS score
Kenna/Cyentia found just 2.6% of 2019's tracked CVEs were ever actively exploited — yet most teams still triage backlogs by CVSS score alone.
The libwebp heap overflow that patched half the internet: CVE-2023-4863
One heap buffer overflow in a 15-year-old image codec forced Chrome, Firefox, Edge, Electron apps, and entire Linux distros to ship emergency patches within days.
CVE-2025-20333 in Cisco ASA: Patch Posture & SBOM Response
Cisco Secure Firewall ASA/FTD buffer overflow scored CVSS 9.9 and was added to CISA KEV the day Cisco published the advisory. Here is the defender playbook.
Edge Appliances Are the Soft Underbelly: VPN Zero-Days as Initial Access in 2026
Check Point's CVE-2026-50751 and Cisco's seventh SD-WAN zero-day of the year are not isolated bugs — they are the same story. Here is why VPN and edge appliances keep becoming the front door for ransomware, and how to monitor and segment them.
CVE-2025-7775 in Citrix NetScaler: Patch Posture & SBOM Response
NetScaler ADC and Gateway memory overflow scored CVSS 9.2 and landed on CISA KEV with a 48-hour patch deadline. Here is the defender playbook.
CVE-2025-53770 in SharePoint (ToolShell): Patch Posture & SBOM Response
On-prem SharePoint deserialization flaw scored CVSS 9.8 and entered CISA KEV the day after public exploitation. Defender playbook below.
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.
CVE-2026-0300 in Palo Alto PAN-OS: Patch Posture & SBOM Response
PAN-OS Captive Portal pre-auth RCE scored CVSS 9.3 and landed on CISA KEV with a three-day patch deadline. Defender playbook below.
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.
CISA KEV Catalog Growth Analysis 2025-2026
A data-grounded analysis of CISA Known Exploited Vulnerabilities catalog growth through 2025 and 2026, and the operational implications for defenders.
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