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CVE-2016-3976: SAP NetWeaver Directory Traversal Vulnerability

criticalknown exploitedpublic exploitCVE-2016-3976
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.
SAP NetWeaver Application Server Java Platforms contains a directory traversal vulnerability via a ..\ (dot dot backslash) in the fileName parameter to CrashFileDownloadServlet. This allows remote attackers to read files.

CSIRTS triage

vendor: SAPproduct: NetWeaverPath traversal
What
There is a directory traversal vulnerability that allows remote attackers to read files.
Who is affected
Deployments of SAP NetWeaver Application Server Java Platforms.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security patch provided by SAP.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2016-3976

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-2016-3976coverage & exploitation statusNVD · CVE.org

Recent advisories for SAP NetWeaver Directory

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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