CVE-2018-16323

Exp

ReadXBMImage in coders/xbm.c in ImageMagick before 7.0.8-9 leaves data uninitialized when processing an XBM file that has a negative pixel value. If the affected code is used as a library loaded into a process that includes sensitive information, that information sometimes can be leaked via the image data.

Published: 2018-09-01 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-16323 is rated High Exploit Risk (75.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 87.53%, 99th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-16323

EDB-ID Source Kind Published Link
45890 exploit_db edb 2018-11-19 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-16323

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-18 87.78% 87.53% -0.25%
2 2026-03-04 86.93% 87.78% +0.85%
3 2026-03-01 — 86.93% —

Full EPSS history (62 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-16323

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-16323

OS Trackers for CVE-2018-16323

vendor priority summary link
alpine medium CVE-2018-16323: 1 source package rows (imagemagick); 10 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 10. https://security.alpinelinux.org/vuln/CVE-2018-16323
debian not yet assigned CVE-2018-16323 not yet assigned priority: Debian including 1 source packages (imagemagick), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-16323
redhat low — https://access.redhat.com/security/cve/CVE-2018-16323
suse low CVE-2018-16323 severity low: SUSE including 136 source package names (GraphicsMagick-1.2.5-78.72.1, ImageMagick-6.4.3.6-78.74.1, …), 198 product×package rows across 43 product lines (SUSE Linux Enterprise Desktop 12 SP3, SUSE Linux Enterprise Desktop 12 SP4, … (43 product lines)): Fixed 198. https://www.suse.com/security/cve/CVE-2018-16323/
ubuntu low CVE-2018-16323 low priority: Ubuntu including 1 source packages (imagemagick), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 5, not-affected 1. https://ubuntu.com/security/CVE-2018-16323

Affected software / configurations for CVE-2018-16323

Vendor Product Version Raw CPE
imagemagick imagemagick < 6.9.10-9 cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
imagemagick imagemagick >= 7.0.0-0, < 7.0.8-9 cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*

References for CVE-2018-16323

URL Tags
https://github.com/ImageMagick/ImageMagick/commit/216d117f05bff87b9dc4db55a1b1fadb38bcb786 Issue Tracking Patch Third Party Advisory
https://usn.ubuntu.com/3785-1/ Third Party Advisory
https://usn.ubuntu.com/4034-1/ Third Party Advisory
https://www.exploit-db.com/exploits/45890/ Exploit Third Party Advisory VDB Entry
cvelogic Threat Intelligence