CVE‑2026‑103408：Session Smart Router DHCP 選項解析漏洞可導致遠端執行
CVE-2026-103408 - Session Smart Router: An attacker-controlled input causes remote code execution when parsing DHCP options
Session Smart Router 的 DHCP 客戶端存在堆疊緩衝區溢位漏洞（CVE‑2026‑103408），允許未授權本地攻擊者利用惡意 DHCP 回覆進行遠端程式碼執行。
此漏洞可在本地網路上遠端執行程式碼，提醒網管即時修補 DHCP 客戶端以保護 Session Smart Router，並可避免惡意攻擊造成服務中斷或資料外洩。
A Stack Buffer Overflow vulnerability in the DHCP client in Juniper Networks Session Smart Router allows an unauthenticated attacker on the local network to achieve remote code execution via a malicious DHCP reply.
Impact
Affected Products
The following products are affected by CVE-2026-103408
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 8cbe9d5a-a066-4c94-8978-4b15efeae968 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Update Session Smart Router software to patch the DHCP client vulnerability and prevent remote code execution.
- Update Juniper Networks Session Smart Router software.
- Apply the latest security patches for the DHCP client.
- Restrict local network access to authorized users.
- Monitor network for suspicious DHCP traffic.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-103408.
| URL | Resource |
|---|---|
| https://supportportal.juniper.net/JSA112183 |
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-103408 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-103408
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-103408 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-103408 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
十月. 28, 2026
Action Type Old Value New Value Added Description A Stack Buffer Overflow vulnerability in the DHCP client in Juniper Networks Session Smart Router allows an unauthenticated attacker on the local network to achieve remote code execution via a malicious DHCP reply. Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-121 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/103xxx/CVE-2026-103408.json">CVE-2026-103408</a> Added Reference https://supportportal.juniper.net/JSA112183
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.