Topic

Perimeter Security: news, advisories and analysis

6 articlesUpdated 2 Oct 2026

CyberSecureToday covers Perimeter Security across 6 articles published between 12 Sep 2026 and 2 Oct 2026. The coverage includes 6 vulnerability advisories. 6 advisories are rated critical or high severity, and 4 involve flaws listed in CISA's Known Exploited Vulnerabilities catalog.

Stories on Perimeter Security most often intersect with Active Exploitation, Command Injection and Zero-Day, with Technology, Cloud & SaaS the most affected sector. The most recent story, “Citrix NetScaler ADC Memory Buffer Flaws Exploited to Breach Perimeter Gateways”, was published 2 Oct 2026. Every article is listed below, newest first, with the affected products, severity and remediation guidance in each piece.

Latest coverage

$Citrix NetScaler ADC perimeter gateway appliance with fractured glowing binary memory buffers under cybernetic attack$
ThreatsCloud & SaaSCritical
Citrix NetScaler ADC Memory Buffer Flaws Exploited to Breach Perimeter Gateways
Threat actors are actively weaponizing memory buffer overflow and command injection flaws in Citrix NetScaler ADC to breach enterprise perimeter gateways.
Priya Raman2 Oct 20269 min read
ThreatsCloud & SaaSCritical
Check Point Security Gateways Targeted in Zero-Day VPN Credential Theft Attacks
CISA orders emergency patching of Check Point Security Gateway flaw CVE-2026-50751 enabling unauthenticated perimeter VPN bypass and network takeover.
Priya Raman18 Sep 202612 min read
ThreatsCloud & SaaSCritical
Ivanti Sentry Critical OS Command Injection Flaw Exploited in Perimeter Infiltration Attacks
CISA adds Ivanti Sentry vulnerability CVE-2026-10520 (CVSS 9.8) to KEV catalog following active zero-day exploitation against corporate mobile gateways.
CST Editorial Desk18 Sep 202611 min read
ThreatsCloud & SaaSHigh
Fortinet FortiOS SSL-VPN Sensitive Information Disclosure Flaw CVE-2025-68686 Actively Targeted for Initial Access
CISA updates KEV with CVE-2025-68686, a critical information disclosure vulnerability in Fortinet FortiOS exploited to harvest active VPN session tokens.
CST Editorial Desk16 Sep 20269 min read
ThreatsCloud & SaaSCritical
Cisco Secure Firewall ASA and FTD Critical Heap Inspection Flaw CVE-2026-20349 Weaponized in the Wild
CISA adds CVE-2026-20349 to KEV, warning of active exploitation targeting Cisco Secure Firewall ASA and FTD packet inspection engines.
Priya Raman16 Sep 202610 min read
ThreatsIndustrial & OTCritical
Two 9.8 Check Point VPN flaws put the perimeter back on the emergency patch queue
Two CVSS 9.8 Check Point VPN certificate flaws can enable unauthenticated RCE. Identify exposed gateways, apply hotfixes and review the perimeter now.
Priya Raman12 Sep 20265 min read

Latest coverage

Citrix NetScaler ADC Memory Buffer Flaws Exploited to Breach Perimeter Gateways

Check Point Security Gateways Targeted in Zero-Day VPN Credential Theft Attacks

Ivanti Sentry Critical OS Command Injection Flaw Exploited in Perimeter Infiltration Attacks

Fortinet FortiOS SSL-VPN Sensitive Information Disclosure Flaw CVE-2025-68686 Actively Targeted for Initial Access

Cisco Secure Firewall ASA and FTD Critical Heap Inspection Flaw CVE-2026-20349 Weaponized in the Wild

Two 9.8 Check Point VPN flaws put the perimeter back on the emergency patch queue