CVE-2026-18839
低CVE-2026-18839 是什么？
An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.
CVSS Vector Breakdown
CVSS 3.1Requires local access — attacker must be logged in or have physical access to the device.
Exploit requires specific conditions, timing, or configuration to succeed.
Basic user account required (e.g. standard login without admin rights).
Victim must take an action (e.g. click a link, open a file) for the exploit to succeed.
Exploiting the vulnerability only affects the vulnerable component itself.
No confidentiality impact. Sensitive data is not exposed.
No integrity impact. Data cannot be modified.
Reduced performance or intermittent outages, but service remains available.
常见问题
CVE-2026-18839 的 CVSS 评分为 2.2/10，评级为 Low。 请查阅受影响产品列表并应用厂商补丁。
CVSS（通用漏洞评分系统）将漏洞严重性评为 0.0 至 10.0。CVE-2026-18839 得分为 2.2/10（Low）。9.0–10.0 为严重，7.0–8.9 为高危，4.0–6.9 为中危，4.0 以下为低危。
受 CVE-2026-18839 影响的已确认设备列表显示在上方 受影响设备部分。请将您的固件版本与供应商安全公告进行比对，并应用最新补丁。
应用供应商提供的最新固件或软件更新。查看上方参考资料部分获取官方公告和补丁说明。如果没有补丁，请考虑禁用受影响的功能或将设备与不受信任的网络隔离。