关键漏洞信息 漏洞标题 Global Buffer Overflow (OOB Read) via Negative Pixel Index in UIL and XPM Writer 严重性 等级: Moderate CVSS v3 base metrics: 6.5/10 CVSS: 3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L 影响版本 受影响版本: < 7.1.2-15, < 6.9.13-40 修复版本: 7.1.2-15, 6.9.13-40 描述 The UIL and XPM image encoder do not validate the pixel index value returned by GetPixelIndex() before using it as an array subscript. In HDRI builds, Quantum is a floating-point type, so pixel index values can be negative. An attacker can craft an image with negative pixel index values to trigger a global buffer overflow read during conversion, leading to information disclosure or a process crash. 示例代码片段 CVE ID CVE-2026-25898 弱点 CWE-125 报告者 ylwango613