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CVE-2024-21894 is a heap-based buffer overflow in the IPsec component of Ivanti Connect Secure 9.x and 22.x and Ivanti Policy Secure. An unauthenticated attacker can submit a specially crafted request to the exposed service, causing the service to crash. Under certain conditions, the heap corruption may permit arbitrary code execution.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Heap overflow vulnerability in the IPsec component of Ivanti Connect Secure and Policy Secure that can allow an unauthenticated remote attacker to cause denial of service, access memory contents, and under certain conditions achieve remote code execution.
Heap overflow in the IPSec component of Ivanti Connect Secure and Ivanti Policy Secure that can be triggered unauthenticated to cause DoS and, under certain conditions, arbitrary code execution.
A heap overflow vulnerability in the IPSec component of Ivanti Connect Secure and Ivanti Policy Secure that can cause denial of service and, in certain conditions, arbitrary code execution.
A high-severity unauthenticated heap-overflow vulnerability in the IPsec component that can cause denial of service and may, in certain conditions, permit arbitrary code execution.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.