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ZDI-26-648: (Pwn2Own) OpenAI Codex External Control of System or Configuration Setting Remote Code Execution Vulnerability
ZDI published a Pwn2Own advisory for CVE-2026-19590, enabling remote code execution in OpenAI's Codex agent via system or configuration control.
Zero Day Initiative advisory ZDI-26-648 documents an External Control of System or Configuration Setting vulnerability in OpenAI Codex, demonstrated at Pwn2Own. A remote attacker could achieve arbitrary code execution, with user interaction required such as opening malicious content. The flaw is tracked as CVE-2026-19590 with a CVSS rating of 7.8. No exploitation in the wild is reported.
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ZDI-26-559: (Pwn2Own) Amazon Smart Plug OTA Update Process Out-Of-Bounds Write Remote Code Execution Vulnerability
ZDI disclosed a Pwn2Own out-of-bounds write RCE (CVSS 7.5) in Amazon Smart Plug's OTA process, exploitable by unauthenticated network-adjacent attackers.
The Zero Day Initiative published ZDI-26-559 for an out-of-bounds write remote code execution flaw in the Amazon Smart Plug OTA update process, demonstrated at Pwn2Own. Unauthenticated network-adjacent attackers can execute arbitrary code on affected installations. ZDI rated the issue CVSS 7.5.
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ZDI-26-562: (Pwn2Own) Home Assistant Green mDNS Server-Side Request Forgery Vulnerability
ZDI-26-562 details an unauthenticated, network-adjacent SSRF in the Home Assistant Green mDNS server, rated CVSS 5.4 and originally demonstrated at Pwn2Own.
A server-side request forgery in Home Assistant Green's mDNS service lets network-adjacent attackers initiate arbitrary server-side requests without authentication. The Zero Day Initiative assigned the flaw a CVSS 5.4 rating under advisory ZDI-26-562. The finding originated from Pwn2Own, and no exploitation in the wild is reported.
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ZDI-26-560: (Pwn2Own) Home Assistant Green go2rtc Command Injection Remote Code Execution Vulnerability
ZDI disclosed another Pwn2Own command injection flaw (CVSS 7.5) in Home Assistant Green's go2rtc, enabling network-adjacent code execution after obtaining localhost access.
The Zero Day Initiative published ZDI-26-560 for a second command injection remote code execution flaw in go2rtc on Home Assistant Green, demonstrated at Pwn2Own. Network-adjacent attackers can execute arbitrary code after first obtaining access to the device's localhost interface. ZDI rated the issue CVSS 7.5.
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ZDI-26-563: (Pwn2Own) Home Assistant Green Simple Service Discovery Protocol Server-Side Request Forgery Vulnerability
ZDI disclosed a Pwn2Own SSRF flaw (CVSS 5.4) in Home Assistant Green's SSDP server, letting unauthenticated network-adjacent attackers trigger arbitrary server-side requests.
The Zero Day Initiative published ZDI-26-563 for a server-side request forgery in the Simple Service Discovery Protocol server on Home Assistant Green. The bug was demonstrated at Pwn2Own and allows network-adjacent, unauthenticated attackers to initiate arbitrary server-side requests on affected installations. ZDI rated the issue CVSS 5.4.
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ZDI-26-558: (Pwn2Own) Amazon Smart Plug OTA Update Process Improper Certificate Validation Vulnerability
ZDI disclosed a Pwn2Own certificate validation flaw (CVSS 6.8) in Amazon Smart Plug's OTA process, allowing network-adjacent attackers to bypass update verification.
The Zero Day Initiative published ZDI-26-558 for an improper certificate validation flaw in the Amazon Smart Plug OTA update process, demonstrated at Pwn2Own. Network-adjacent attackers need no authentication to bypass certificate validation for over-the-air updates. ZDI rated the issue CVSS 6.8.
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ZDI-26-557: (Pwn2Own) Amazon Smart Plug Insecure Fallback Information Disclosure Vulnerability
ZDI disclosed a Pwn2Own information disclosure flaw (CVSS 4.3) in Amazon Smart Plug, letting unauthenticated network-adjacent attackers access sensitive information.
The Zero Day Initiative published ZDI-26-557 for an insecure fallback information disclosure flaw in Amazon Smart Plug, demonstrated at Pwn2Own. Unauthenticated network-adjacent attackers can disclose sensitive information on affected installations. ZDI rated the issue CVSS 4.3.
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ZDI-26-561: (Pwn2Own) Home Assistant Green go2rtc Command Injection Remote Code Execution Vulnerability
ZDI disclosed a Pwn2Own command injection flaw (CVSS 7.5) in Home Assistant Green's go2rtc, enabling network-adjacent attackers to execute arbitrary code via localhost access.
The Zero Day Initiative published ZDI-26-561 for a command injection remote code execution flaw in go2rtc on Home Assistant Green, demonstrated at Pwn2Own. Network-adjacent attackers can execute arbitrary code after first gaining access to the device's localhost interface. ZDI rated the issue CVSS 7.5.
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ZDI-26-540: (Pwn2Own) Microsoft Windows win32kfull Use-After-Free Information Disclosure Vulnerability
ZDI discloses CVE-2026-65776, a Pwn2Own win32kfull use-after-free in Windows enabling local information disclosure, CVSS 6.5.
ZDI-26-540 describes a use-after-free vulnerability in Microsoft Windows win32kfull, demonstrated at Pwn2Own, that allows local attackers to disclose sensitive information. Exploitation requires the attacker to first execute low-privileged code on the target system. ZDI assigned a CVSS score of 6.5, tracked as CVE-2026-65776.
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ZDI-26-534: (Pwn2Own) Microsoft Exchange Capture-Replay Authentication Bypass Vulnerability
Pwn2Own-demoed CVE-2026-62911 capture-replay authentication bypass in Microsoft Exchange allows unauthenticated remote attacks, CVSS 8.1.
ZDI-26-534 describes a capture-replay authentication bypass vulnerability in Microsoft Exchange, demonstrated at Pwn2Own, allowing remote attackers to bypass authentication without credentials. ZDI assigned a CVSS score of 8.1, and the flaw is tracked as CVE-2026-62911. Exchange servers are widely deployed enterprise mail infrastructure.
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ZDI-26-541: (Pwn2Own) Microsoft Windows win32kfull Use-After-Free Local Privilege Escalation Vulnerability
ZDI discloses a Pwn2Own Windows win32kfull use-after-free local privilege escalation flaw (CVE-2026-65775, CVSS 8.8) requiring existing low-privileged code execution.
ZDI advisory ZDI-26-541 describes a use-after-free in Microsoft Windows win32kfull that allows local attackers to escalate privileges. Exploitation requires the attacker to first execute low-privileged code on the target system. The flaw carries a CVSS score of 8.8 and is assigned CVE-2026-65775; it was demonstrated at Pwn2Own.
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