How severe is CVE-2018-11655?

CVE-2018-11655 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-11655 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11655?

CVE-2018-11655 primarily affects Imagemagick. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-11655?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-11655 published?

CVE-2018-11655 was published on 2018-06-01 and last updated on 2026-06-17.

CVE-2018-11655

CVE-2018-11655 is a medium-severity vulnerability in Imagemagick with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-772
Affected product: Imagemagick
Published: 2018-06-01
Last modified: 2026-06-17

Description

In ImageMagick 7.0.7-20 Q16 x86_64, a memory leak vulnerability was found in the function GetImagePixelCache in MagickCore/cache.c, which allows attackers to cause a denial of service via a crafted CALS image file.

Frequently asked questions

What is CVE-2018-11655?: In ImageMagick 7.0.7-20 Q16 x86_64, a memory leak vulnerability was found in the function GetImagePixelCache in MagickCore/cache.c, which allows attackers to cause a denial of service via a crafted CALS image file.
How severe is CVE-2018-11655?: CVE-2018-11655 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-11655 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11655?: CVE-2018-11655 primarily affects Imagemagick. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-11655?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-11655 published?: CVE-2018-11655 was published on 2018-06-01 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:imagemagick:imagemagick:7.0.7-20:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

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