CVE-2018-6876: The OLEProperty class in ole/oleprop.cpp in libfpx 1.3.1-10, as used in ImageMagick 7.0.7-22 Q16 and other pro

This month

MEDIUM 6.5DOWNGRADEDOWNGRADE

CVE-2018-6876 is a medium-severity flaw (CVSS 6.5) affecting imagemagick, libfpx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The OLEProperty class in ole/oleprop.cpp in libfpx 1.3.1-10, as used in ImageMagick 7.0.7-22 Q16 and other products, allows remote attackers to cause a denial of service (stack-based buffer under-read) via a crafted bmp image.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.5% (top 16%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: imagemagick · libfpx project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-02-09 18:29 UTCPublished CVE record published
2026-06-17 02:02 UTCUpdated Record last modified

imagemagick imagemagick DOWNGRADE

Affected: 7.0.7-22 q16

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0.7-22

1. Check installed version

apt-cache policy imagemagick || rpm -q imagemagick || imagemagick --version

2. No fixed release: DOWNGRADE to a release before 7.0.7-22 (Debian / Ubuntu)

apt-cache madison imagemagick sudo apt install imagemagick=<VERSION_BEFORE_7.0.7-22> sudo apt-mark hold imagemagick

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list imagemagick sudo dnf downgrade imagemagick-<VERSION_BEFORE_7.0.7-22> sudo dnf versionlock add imagemagick

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

libfpx project libfpx DOWNGRADE

Affected: 1.3.1-10

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.1-10

1. Check installed version

apt-cache policy libfpx || rpm -q libfpx || libfpx --version

2. No fixed release: DOWNGRADE to a release before 1.3.1-10 (Debian / Ubuntu)

apt-cache madison libfpx sudo apt install libfpx=<VERSION_BEFORE_1.3.1-10> sudo apt-mark hold libfpx

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list libfpx sudo dnf downgrade libfpx-<VERSION_BEFORE_1.3.1-10> sudo dnf versionlock add libfpx

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-6876?

imagemagick: downgrade or apply the listed mitigation; libfpx: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-6876 being exploited?

CVE-2018-6876 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-6876 affect?

CVE-2018-6876 affects imagemagick, libfpx. Severity is medium (CVSS 6.5). The OLEProperty class in ole/oleprop.cpp in libfpx 1.3.1-10, as used in ImageMagick 7.0.7-22 Q16 and other products, allows remote attackers to cause a denial of service (stack-based buffer under-read) via a crafted bmp image.

How urgent is CVE-2018-6876?

Priority 49/100. Public exploit reference

Software pages

ImageMagick vulnerabilities

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References

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