CVE-2026-32259

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-16 and 6.9.13-41, when a memory allocation fails in the sixel encoder it would be possible to write past the end of a buffer on the stack. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

community-verified Authored 2026-05-29

{

Edit /etc/ImageMagick-7/policy.xml (or -6 for older branches) and add a denial rule for the SIXEL coder:

<policymap>
  <policy domain="coder" rights="none" pattern="SIXEL" />
</policymap>

Restart any application servers or workers using ImageMagick (e.g. systemctl restart apache2 or relevant container pods). Verify with:

convert -list format | grep -i sixel
# should show "SIXEL" with no read/write permissions

Rollback: Remove the policy line and restart services. SIXEL is a legacy DEC terminal format; disabling it has minimal impact on modern workflows.

Upgrade to 7.1.2-16+ or 6.9.13-41+ as soon as vendor packages are available.

}

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`8:6.9.11.60+dfsg-1.6+deb12u8`
debian	bullseye	fixed	`8:6.9.11.60+dfsg-1.3+deb11u11`
debian	forky	fixed	`8:7.1.2.16+dfsg1-1`
debian	sid	fixed	`8:7.1.2.16+dfsg1-1`
debian	trixie	fixed	`8:7.1.1.43+dfsg1-1+deb13u7`
sles		affected

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.