Samsung Open Source CVE-2026-25208

Remote attacker must craft specific input triggering integer overflow in Samsung Escargot commit 97e8115ab1110bc502b4b5e4a0c689a71520d335. Requires AC:H conditions (specific crafted values, timing, or computation state). No authentication needed. Unknown if victim interaction required.

Real-world risk assessment requires balancing multiple signals. The CVSS 8.1 (High) score reflects network attack vector (AV:N) with high attack complexity (AC:H), no privileges required (PR:N), no user interaction (UI:N), and high impact across confidentiality, integrity, and availability. The high complexity suggests exploitation requires sophisticated techniques such as heap grooming or ASLR bypass. No EPSS data provided, but absence of KEV listing and no identified public exploit code indicates this is not currently being exploited in the wild. However, the attack vector (network-accessible JavaScript processing) and scope (embedded in consumer devices with long update cycles) elevate practical risk. Samsung TV and appliance platforms often have delayed patching windows and extensive deployment footprints. From SSVC perspective: exploitation status is POC-level (GitHub PR demonstrates fix), likely automatable once weaponized (JavaScript delivery is trivial), and technical impact is total (RCE potential). This should be prioritized for environments running Escargot, particularly Samsung smart devices, despite no active exploitation confirmed.

An attacker hosts a malicious website or injects JavaScript into a legitimate web service accessed by a Samsung smart TV or appliance running vulnerable Escargot. The crafted JavaScript contains arithmetic operations designed to trigger the integer overflow during array allocation or string manipulation. When the victim device processes this code (e.g., through web browsing, embedded ad content, or API responses), the overflow causes a smaller-than-intended buffer allocation. Subsequent write operations overflow the buffer, corrupting adjacent memory structures. With sufficient heap manipulation techniques to overcome high attack complexity, the attacker achieves arbitrary code execution within the JavaScript engine's process context, potentially gaining control of the device for botnet recruitment, lateral movement, or data exfiltration.