What is CVE-2017-16691?

CVE-2017-16691 is a medium-severity vulnerability in SAP Business Application Software Integrated Solution, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-12-12.

How severe is CVE-2017-16691?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2017-16691 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in SAP Business Application Software Integrated Solution

CVE-2017-16691

SAP Note Assistant tool (SAP BASIS from 7.00 to 7.02, from 7.10 to 7.11, 7.30, 7.31,7.40, from 7.50 to 7.52) supports upload of digitally signed note file of type 'SAR'. The digital signature verification is done together with the extraction of note file contained in the SAR archive. It is possible to append a tampered file to the SAR archive using SAPCAR tool and during the extraction, digital signature verification fails but the tampered file is extracted.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.3th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

SAP Business Application Software Integrated Solution — versions 7.00, 7.01, 7.02
SAP Note Assistant — versions SAP BASIS from 7.00 to 7.02, from 7.10 to 7.11, 7.30, 7.31,7.40, from 7.50 to 7.52

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

martingalloar/martingalloar

References

blogs.sap.com/2017/12/12/sap-security-patch-day-december-2017/ (Issue Tracking, Vendor Advisory)
launchpad.support.sap.com/ (Vendor Advisory, Permissions Required)
www.securityfocus.com/bid/101822 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-16691?: CVE-2017-16691 is a medium-severity vulnerability in SAP Business Application Software Integrated Solution, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-12-12.
How severe is CVE-2017-16691?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2017-16691 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.