CVE-2026-118633：Sophos UTM 路徑遍歷漏洞可遠端執行 root 程式
CVE-2026-118633 - Sophos UTM Path Traversal Remote Code Execution
Sophos UTM 所有版本皆存在路徑遍歷漏洞，遠端未經授權攻擊者可透過持續攻擊數分鐘並利用電子郵件代理掃描功能，獲得 root 許可權執行任意程式。
- 漏洞性質：路徑遍歷 + race condition，允許遠端執行任意程式。
A path traversal vulnerability allows a remote unauthenticated attacker to execute arbitrary code as root in Sophos UTM (all versions) after winning a race condition by sustaining repeated attacks for a few minutes when the email proxy is used with scanning enabled. Sophos UTM is end-of-life and the patch must be installed manually.
Impact
Affected Products
The following products are affected by CVE-2026-118633
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.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Sophos | unified_threat_management_up2date |
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 | 526a354d-e866-4174-ae7d-bac848e5c4c5 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 526a354d-e866-4174-ae7d-bac848e5c4c5 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Manually apply patches to Sophos UTM to fix path traversal and race condition vulnerabilities.
- Manually apply vendor patches for Sophos UTM.
- Disable the email proxy if scanning is enabled.
- Consider upgrading from end-of-life Sophos UTM.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-118633.
| URL | Resource |
|---|---|
| https://www.sophos.com/en-us/security-advisories/sophos-sa-20261028-utm-rce |
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-118633 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-2026-118633
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-2026-118633 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-118633 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.
-
New CVE Received by [email protected]
十月. 28, 2026
Action Type Old Value New Value Added Description A path traversal vulnerability allows a remote unauthenticated attacker to execute arbitrary code as root in Sophos UTM (all versions) after winning a race condition by sustaining repeated attacks for a few minutes when the email proxy is used with scanning enabled. Sophos UTM is end-of-life and the patch must be installed manually. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-35 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/118xxx/CVE-2026-118633.json">CVE-2026-118633</a> Added Reference https://www.sophos.com/en-us/security-advisories/sophos-sa-20261028-utm-rce
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.