D-Link DIR-645 hedwig.cgi hedwigcgi_main stack-based overflow
翻译中…平台
dlink
组件
dlink
CVE-2026-5815 describes a stack-based buffer overflow vulnerability found in the D-Link DIR-645 router. This flaw resides within the hedwigcgi_main function of the /cgi-bin/hedwig.cgi file, allowing a remote attacker to potentially trigger a crash or execute arbitrary code. The vulnerability impacts D-Link DIR-645 routers running versions 1.01 through 1.03, and it’s important to note that these products are no longer supported by the vendor.
影响与攻击场景翻译中…
A critical vulnerability has been detected in the D-Link DIR-645 router (firmware versions 1.01, 1.02, and 1.03), identified as CVE-2026-5815. This vulnerability resides within the 'hedwigcgi_main' function of the '/cgi-bin/hedwig.cgi' file and allows for a stack-based buffer overflow. This means a remote attacker could potentially execute malicious code on the device, compromising network security. The vulnerability is rated with a CVSS score of 8.8, indicating a high risk. Importantly, D-Link no longer provides support for this router model, meaning no security updates will be released to mitigate this vulnerability. The public availability of the exploit makes exploitation more accessible to attackers.
利用背景翻译中…
The exploit for CVE-2026-5815 is publicly available, making it easier for attackers with technical skills to utilize it. The vulnerability is exploited through manipulation of the 'hedwigcgi_main' function, leading to a stack-based buffer overflow. A remote attacker can send specially crafted requests to the router to trigger this overflow and potentially gain control of the device. The lack of vendor support increases the risk, as no security patches are available to fix the vulnerability. The remote nature of the exploitation means the attack can originate from anywhere on the internet.
威胁情报
漏洞利用状态
EPSS
0.09% (26% 百分位)
CISA SSVC
CVSS 向量
这些指标意味着什么？
- Attack Vector
- 网络 — 可通过互联网远程利用，无需物理或本地访问。攻击面最大。
- Attack Complexity
- 低 — 无需特殊条件，可以稳定地利用漏洞。
- Privileges Required
- 低 — 任何有效用户账户均可。
- User Interaction
- 无 — 攻击自动且无声，受害者无需任何操作。
- Scope
- 未改变 — 影响仅限于脆弱组件本身。
- Confidentiality
- 高 — 完全丧失机密性，攻击者可读取所有数据。
- Integrity
- 高 — 攻击者可写入、修改或删除任何数据。
- Availability
- 高 — 完全崩溃或资源耗尽，完全拒绝服务。
受影响的软件
弱点分类 (CWE)
时间线
- 已保留
- 发布日期
- 修改日期
- EPSS 更新日期
缓解措施和替代方案翻译中…
Given that D-Link no longer supports the DIR-645, the primary mitigation is to replace the device with a more modern, actively supported router. If immediate replacement isn't possible, isolate the DIR-645 from the main network, using it only for non-critical devices without internet access. Monitoring the network for suspicious activity can also help detect potential attacks. It's crucial to understand that these measures are palliative and do not eliminate the underlying vulnerability. Continued exposure to risk is inevitable until the device is replaced.
修复方法翻译中…
Este dispositivo ya no recibe soporte del fabricante. Se recomienda reemplazar el dispositivo por uno actualizado y con soporte activo para mitigar el riesgo de explotación. Si no es posible, aislar el dispositivo de la red y deshabilitar el acceso remoto.
CVE 安全通讯
漏洞分析和关键警报直接发送到您的邮箱。
常见问题翻译中…
What is CVE-2026-5815 — Buffer Overflow in D-Link DIR-645 Router?
It's a unique identifier for this security vulnerability.
Am I affected by CVE-2026-5815 in D-Link DIR-645 Router?
The DIR-645 is an older model and has reached the end of its support lifecycle.
How do I fix CVE-2026-5815 in D-Link DIR-645 Router?
Isolate the router from the main network and monitor for suspicious activity.
Is CVE-2026-5815 being actively exploited?
No, due to the public vulnerability and lack of support, it is not safe.
Where can I find the official D-Link DIR-645 Router advisory for CVE-2026-5815?
Look for unusual network activity, such as unexpected data traffic or unknown devices.