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CVE-2016-9773

16
FAUCET Score

CVE-2016-9773 describes a heap-based buffer overflow in ImageMagick versions 7.0.3.8 and earlier, specifically within the IsPixelGray function. This vulnerability, an incomplete fix for CVE-2016-9556, allows remote attackers to trigger a denial of service through an out-of-bounds heap read by providing a specially crafted image file. Rated Medium with a CVSS score of 5.5, it requires user interaction (UI:R) and local access (AV:L) to exploit, leading to high availability impact (A:H). There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.3-8CPE matchmatch criteria
cpe:2.3:a:imagemagick:imagemagick:7.0.3-8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 87th percentile among its peer group of 5,758 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2016-9773Low

ImageMagick: Heap-buffer overflow in IsPixelGray in pixel-accessor.h (Incomplete fix for CVE-2016-9556)

Dec 1, 2016

References

blogs.gentoo.org / ago/2016/12/01/imagemagick-heap-based-buffer-overflow-in-ispixelgray-pixel-accessor-h-incomplete-fix-for-cve-2016-9556
PatchThird Party AdvisoryVDB Entry
openwall.com / lists/oss-security/2016/12/01/4
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/12/02/11
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/12/02/12
Mailing ListThird Party Advisory