CVE-2026-56365: ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-56365 is a low-severity flaw (CVSS 3.7) affecting imagemagick. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-401
Published	2026-06-30
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: imagemagick

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-30 23:17 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

imagemagick imagemagick UPGRADE

Affected: < 6.9.13-44 · >= 7.0.0-0 and < 7.1.2-19

Fixed in: 6.9.13-44, 7.1.2-19

Safe to downgrade to: a release before 7.0.0-0

1. Check installed version

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

2. UPGRADE to 6.9.13-44 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade imagemagick

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade imagemagick

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 7.0.0-0 (Debian / Ubuntu)

apt-cache madison imagemagick sudo apt install imagemagick=<VERSION_BEFORE_7.0.0-0> sudo apt-mark hold imagemagick

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list imagemagick sudo dnf downgrade imagemagick-<VERSION_BEFORE_7.0.0-0> 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.

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-2026-56365?

imagemagick: upgrade to 6.9.13-44, 7.1.2-19. Exact commands for each OS are on this page.

Is CVE-2026-56365 being exploited?

CVE-2026-56365 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-2026-56365 affect?

CVE-2026-56365 affects imagemagick. Severity is low (CVSS 3.7). ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service.

How urgent is CVE-2026-56365?

Priority 23/100. Remotely exploitable, no login, no user action

Software pages

ImageMagick vulnerabilities

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References

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