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HIGH · CVSS 7.5 CISA Known Exploited Vulnerability

CVE-2017-12637

SAP NetWeaver Directory Traversal Vulnerability

SAP NetWeaver

Directory traversal vulnerability in scheduler/ui/js/ffffffffbca41eb4/UIUtilJavaScriptJS in SAP NetWeaver Application Server Java 7.5 allows remote attackers to read arbitrary files via a .. (dot dot) in the query string, as exploited in the wild in August 2017, aka SAP Security Note 2486657.

CVSS
7.5
HIGH
EPSS
95.1%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
7 Aug 2017
CWE-22

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 19 March 2025. US federal agencies were required to remediate it by 9 April 2025.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 95.1%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

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

Frequently asked questions

Is CVE-2017-12637 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2017-12637.

What does CVE-2017-12637 affect?

CVE-2017-12637 affects SAP NetWeaver. Directory traversal vulnerability in scheduler/ui/js/ffffffffbca41eb4/UIUtilJavaScriptJS in SAP NetWeaver Application Server Java 7.5 allows remote attackers to read arbitrary files via a .. (dot dot) in the query string, as exploited in the wild in August 2017, aka SAP Security Note 2486657.

How severe is CVE-2017-12637?

CVE-2017-12637 is rated HIGH with a CVSS base score of 7.5. EPSS puts the probability of exploitation in the next 30 days at 95.1%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 9 April 2025.

How should organisations respond to CVE-2017-12637?

Apply the vendor patch for SAP NetWeaver as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.