CVE-2017-16546 — The ReadWPGImage function in coders/wpg

The ReadWPGImage function in coders/wpg.c in ImageMagick 7.0.7-9 does not properly validate the colormap index in a WPG palette, which allows remote attackers to cause a denial of service (use of uninitialized data or invalid memory allocation) or possibly have unspecified other

01What is this vulnerability?

The ReadWPGImage function in coders/wpg.c in ImageMagick 7.0.7-9 does not properly validate the colormap index in a WPG palette, which allows remote attackers to cause a denial of service (use of uninitialized data or invalid memory allocation) or possibly have unspecified other impact via a malformed WPG file.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-11-05T22:29:00.230
• Last modified: 2026-05-13T00:24:29.033

09References

• github.com — https://github.com/ImageMagick/ImageMagick/commit/2130bf6f89ded32ef0c88a11694f10…
• github.com — https://github.com/ImageMagick/ImageMagick/commit/e04cf3e9524f50ca336253513d9772…
• github.com — https://github.com/ImageMagick/ImageMagick/issues/851
• usn.ubuntu.com — https://usn.ubuntu.com/3681-1/
• www.debian.org — https://www.debian.org/security/2017/dsa-4040
• www.debian.org — https://www.debian.org/security/2017/dsa-4074
• github.com — https://github.com/ImageMagick/ImageMagick/commit/2130bf6f89ded32ef0c88a11694f10…
• github.com — https://github.com/ImageMagick/ImageMagick/commit/e04cf3e9524f50ca336253513d9772…
• github.com — https://github.com/ImageMagick/ImageMagick/issues/851
• usn.ubuntu.com — https://usn.ubuntu.com/3681-1/