CVE-2025-0282

CVE-2025-0282 is a stack-based buffer overflow (CWE-121) in Ivanti Connect Secure, Policy Secure, and ZTA Gateways, reachable by unauthenticated network input. An attacker can trigger it remotely by sending crafted, unauthenticated traffic to a vulnerable gateway, overwriting stack memory and gaining code execution under the appliance's context. Successful exploitation yields unauthenticated remote code execution on the device, giving the attacker control of the VPN/secure-access gateway and a foothold into the protected network. Organizations running any of the affected Ivanti secure-access products are exposed; the source data specifies no version ranges, so defenders should consult Ivanti's advisory for exact affected and fixed releases. The flaw is being actively exploited: it was added to CISA KEV on 2025-01-08 with known ransomware use, and EPSS assigns a 100% probability of exploitation within 30 days (100th percentile), despite no public PoC being known.

What to do: Apply the patched releases identified in Ivanti's advisory and follow CISA's required action: hunt for signs of compromise, remediate if indicators are found, and apply updates before returning any device to service. Because exploitation is active and ransomware use is known, treat any appliance that was internet-reachable before patching as potentially compromised (check integrity, rotate credentials). Exact fixed versions were not included in the source data, so verify the correct update path for your branch (including older Connect Secure/Policy Secure releases) against Ivanti's bulletin.