CVE-2026-28318— SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability
Quick assessment
Affected
SolarWinds Serv-U
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
SolarWinds Serv-U是美国SolarWinds公司的一款 FTP（文件传输协议）服务器软件。 SolarWinds Serv-U存在资源管理错误漏洞，该漏洞源于未经验证的POST请求使用Content-Encoding: deflate可能导致服务崩溃。
In-the-Wild Activity Observed
github_trending · low
cisa_kev · confirmed
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| SolarWinds | Serv-U | 15.5.4 and previous versions |
affected |
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I. Basic Information for CVE-2026-28318
Vulnerability Information
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Vulnerability Title
SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Serv-U 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SolarWinds Serv-U是美国SolarWinds公司的一款 FTP（文件传输协议）服务器软件。 SolarWinds Serv-U存在资源管理错误漏洞，该漏洞源于未经验证的POST请求使用Content-Encoding: deflate可能导致服务崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SolarWinds | Serv-U | 15.5.4 and previous versions | - |
|
II. Public POCs for CVE-2026-28318
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-28318 (1)
Vendor Pages for CVE-2026-28318 (1)
IV. Related Vulnerabilities
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Same weakness: CWE-400
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V. Comments for CVE-2026-28318
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