How severe is CVE-2016-3976?

CVE-2016-3976 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2016-3976?

Affected package information for CVE-2016-3976 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2016-3976?

No fixed version has been published for CVE-2016-3976 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2016-3976 actively exploited in the wild?

Yes. There are 5 known exploit references for CVE-2016-3976, including 1 documented proof-of-concept exploit on Exploit-DB and 4 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2016-3976?

CVE-2016-3976 has an EPSS (Exploit Prediction Scoring System) score of 76.3%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2016-3976 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2016-3976 (SAP NetWeaver Directory Traversal Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-05-03. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2016-3976?

CVE-2016-3976 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2016-3976?

CVE-2016-3976 affects sap netweaver application server java. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2016-3976 published, and has it been updated?

CVE-2016-3976 was published on April 7, 2016 and was last updated on April 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2021-11-03 — agencies required to remediate by 2022-05-03

CVE-2016-3976

HIGH

Directory traversal vulnerability in SAP NetWeaver AS Java 7.1 through 7.5 allows remote attackers to read arbitrary files via a ..\ (dot dot backslash) in the fileName parameter to…

Published

Apr 7, 2016

Updated

Apr 21, 2026

Affected

0 pkgs

Patched

None yet

Exploits

5 known

EPSS Exploitation Probability

via FIRST.org ↗

76.3%probability of exploitation in next 30 days

Very High Risk99th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Directory traversal vulnerability in SAP NetWeaver AS Java 7.1 through 7.5 allows remote attackers to read arbitrary files via a ..\ (dot dot backslash) in the fileName parameter to CrashFileDownloadServlet, aka SAP Security Note 2234971.

Affected Products

1 product · 1 configurations

Application

netweaver application server javasap

≥ 7.10 && ≤ 7.50

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-39996webappsjava

SAP NetWeaver AS JAVA 7.1 < 7.5 - Directory Traversal

by ERPScan · Jun 21, 2016

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2016-3976 in your stack?

O3 detects CVE-2016-3976 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

7.5/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

None

A:Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE Classification

CWE-22Path Traversal

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Apr 7, 2016

First exploit

Jun 21, 2016

KEV added

Nov 3, 2021

Last updated

Apr 21, 2026

Identifiers

CVE-2016-3976

References

Advisoryerpscan.io Advisoryerpscan.io Advisoryerpscan.io Advisoryerpscan.io Exploit / PoCpacketstormsecurity.com Exploit / PoCseclists.org Exploit / PoCexploit-db.com Exploit / PoCpacketstormsecurity.com Exploit / PoCseclists.org Exploit / PoCexploit-db.com Weblaunchpad.support.sap.com Weblaunchpad.support.sap.com Webcisa.gov

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