What is CVE-2017-9926?

CVE-2017-9926 is a high-severity vulnerability in Microsoft Windows, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-07-05.

How severe is CVE-2017-9926?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Microsoft Windows

CVE-2017-9926

In SWFTools 2013-04-09-1007 on Windows, png2swf allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted file, related to a "Read Access Violation starting at image00000000_00400000+0x000000000001b596."

Vulnerability class: Buffer Overflow

Published 2017-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.8th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% 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

Microsoft Windows
Swftools — versions 2013-04-09-1007

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/wlinzi/security_advisories/tree/master/CVE-2017-9926 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-9926?: CVE-2017-9926 is a high-severity vulnerability in Microsoft Windows, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-07-05.
How severe is CVE-2017-9926?: High severity. CVSS v3 base score is 8.8 out of 10.