Listen to this Post
How the CVE Works
CVE-2025-5451 is a stack-based buffer overflow vulnerability in Ivanti Connect Secure (prior to v22.7R2.8) and Ivanti Policy Secure (prior to v22.7R1.5). An authenticated remote attacker with admin privileges can exploit this flaw by sending a crafted request that overflows a fixed-size buffer in the application’s stack memory. This corrupts adjacent memory regions, leading to a denial of service (crash) or potential arbitrary code execution. The vulnerability stems from improper bounds checking when processing input data, allowing an attacker to overwrite critical stack structures like return addresses.
DailyCVE Form
Platform: Ivanti Connect Secure / Policy Secure
Version: < 22.7R2.8 / < 22.7R1.5
Vulnerability: Stack overflow
Severity: Critical
Date: 07/15/2025
Prediction: Patch by 08/10/2025
What Undercode Say
Analytics:
grep -r "buffer_handling" /opt/ivanti/ checksec --file=/usr/bin/ics_service
How Exploit:
payload = "A" 1024 + struct.pack("<I", 0xdeadbeef)
send_request("/admin/api", payload)
Protection from this CVE:
– Apply Ivanti patches (22.7R2.8 / 22.7R1.5).
– Restrict admin access via network ACLs.
– Enable stack canaries (recompile if needed).
Impact:
– DoS via service crash.
– Potential RCE under memory layouts.
– Compromise of VPN integrity.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
