CVE-2026-28318

Published Jun 4, 2026

Last updated 4 days ago

Exploit known CVSS high 7.5

Supply chain

Server

HTTP

Serv-U

SolarWinds Serv-U

Overview

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: psirt@solarwinds.com
NVD status: Analyzed
Products: serv-u

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
Exploit added on: Jun 5, 2026
Exploit action due: Jun 19, 2026
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

psirt@solarwinds.com: CWE-400

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "0879DDA2-3F57-41C7-A689-4B904310687E",
            "versionEndExcluding": "15.5.4",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:solarwinds:serv-u:15.5.4:-:*:*:*:*:*:*",
            "matchCriteriaId": "04BC76FB-A18F-4D63-BF35-71E95E1447C0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Known exploits

Weaknesses

Social media

Configurations

Related CVEs

References