🚨Citrix Warns of Eight Critical CVEs, Two With 9.5 CVSS Scores
Citrix NetScaler Under Attack, Patches Urgently Needed
TL;DR
Citrix issued a bulletin warning of eight critical CVEs, including two with 9.5 CVSS scores, allowing remote code execution. Threat actors are actively exploiting these vulnerabilities globally.
Citrix has issued a bulletin warning of eight critical CVEs, including two with 9.5 CVSS scores, allowing remote code execution and memory overflow vulnerabilities. Threat actors are actively exploiting these vulnerabilities globally, making immediate patching crucial. NetScaler appliances are notoriously buggy, with critical vulnerabilities being quickly attacked in recent years. Updating can be complex and may require downtime, but the risk of exploitation is high.
Key Points
Citrix issued a bulletin warning of eight critical CVEs, including two with 9.5 CVSS scores.
CVE-2026-88771 allows remote code execution and arbitrary command execution.
CVE-2026-88772 is a memory overflow vulnerability leading to remote code execution or denial of service.
Three 8.8-rated memory overflow bugs can make NetScaler appliances unstable.
Citrix has published patches to fix the vulnerabilities, but updating can be complex.
Why It Matters
If you're running Citrix NetScaler appliances, this is a critical update. Threat actors are actively exploiting these vulnerabilities globally, and the risk of remote code execution and denial of service is high. Patches are available but updating can be complex and may require downtime. Security vendors are working on compensating controls to mitigate risks.
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