CVE Watch—

CVE-2021-35247

SolarWinds Serv-U Improper Input Validation Vulnerability

CVSS

—

No CVSS

EPSS

3.5%

p89

KEV

YES

Jan 21, 2022

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

3.5%EPSS · 30 days3.5%

2026-09-162026-10-14

KEV catalog record

Product

SolarWinds / Serv-U

Vulnerability

SolarWinds Serv-U Improper Input Validation Vulnerability

Added to KEV

Jan 21, 2022

Remediate by

Feb 4, 2022

Known ransomware use

Summary description

SolarWinds Serv-U versions 15.2.5 and earlier contain an improper input validation vulnerability that allows attackers to build and send queries without sanitization.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-35247

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