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CVE-2021-35247: SolarWinds Serv-U Improper Input Validation Vulnerability

criticalknown exploitedCVE-2021-35247
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: SolarWindsproduct: Serv-UOtheraffected: 15.2.5 and earlier
What
Serv-U contains an improper input validation vulnerability that allows attackers to build and send queries without sanitization.
Who is affected
Deployments of SolarWinds Serv-U versions 15.2.5 and earlier.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to a patched version of SolarWinds Serv-U.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-21
Exploitation
Observed in the wild (CISA KEV)

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

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-35247coverage & exploitation statusNVD · CVE.org

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