SolarWinds Serv-U File Transfer Server Resource Exhaustion Exploited in the Wild Carries a Lapsed June 19th CISA KEV Federal Deadline

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-28318

Key Details

CVE	CVE-2026-28318
Vulnerability Name	SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
Affected products	SolarWinds Serv-U
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-400 (Uncontrolled Resource Consumption)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-05.
Exploitation prediction (EPSS)	1.94% probability of exploitation in the next 30 days (79% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-06-19 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
SolarWinds	Serv-U

Vendor

Product

Affected Versions

Patch Status

SolarWinds

Serv-U

Subsystems	General OT
Sectors	Multiple

What to Know

SolarWinds Serv-U contains an uncontrolled resource consumption vulnerability that allows specially crafted POST requests using the Content-Encoding: deflate header to crash the Serv-U service without authentication.

What to Do

Monitor SolarWinds's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-28318
CVE	https://www.cve.org/CVERecord?id=CVE-2026-28318

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-28318

CVE

https://www.cve.org/CVERecord?id=CVE-2026-28318

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-06-05
Required Action Due Date	2026-06-19
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-06-05

Required Action Due Date

2026-06-19

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.