CVE-2026-46521

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
1.6%
KEV
Not listed

Published

May 18, 2026

Last Modified

June 11, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
Patch available. Sources: github.
github Patch Available

Heap Buffer Over-Write in MIFF encoder when using LZMA compression · Advisory · ImageMagick/ImageMagick · GitHub

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jcqp-6r6f-3mfx

Vendor Advisories for CVE-2026-46521(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(18 across 1 ecosystem)
NuGet(18)
PackageVulnerable rangeFixed inDependents
Magick.NET-Q16-AnyCPU10.0.0 ... 9.1.2 (215 versions)14.13.1—
Magick.NET-Q16-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q16-HDRI-AnyCPU10.0.0 ... 9.1.2 (212 versions)14.13.1—
Magick.NET-Q16-HDRI-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q16-HDRI-OpenMP-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q16-HDRI-OpenMP-x6410.0.0 ... 9.1.2 (112 versions)14.13.1—
Magick.NET-Q16-HDRI-x6410.0.0 ... 9.1.2 (212 versions)14.13.1—
Magick.NET-Q16-HDRI-x8610.0.0 ... 9.1.2 (212 versions)14.13.1—
Magick.NET-Q16-OpenMP-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q16-OpenMP-x6410.0.0 ... 9.1.2 (112 versions)14.13.1—
Magick.NET-Q16-x6410.0.0 ... 9.1.2 (231 versions)14.13.1—
Magick.NET-Q16-x8610.0.0 ... 9.1.2 (231 versions)14.13.1—
Magick.NET-Q8-AnyCPU10.0.0 ... 9.1.2 (215 versions)14.13.1—
Magick.NET-Q8-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q8-OpenMP-arm6410.0.0 ... 9.1.2 (60 versions)14.13.1—
Magick.NET-Q8-OpenMP-x6410.0.0 ... 9.1.2 (112 versions)14.13.1—
Magick.NET-Q8-x6410.0.0 ... 9.1.2 (231 versions)14.13.1—
Magick.NET-Q8-x8610.0.0 ... 9.1.2 (231 versions)14.13.1—

Weakness Classification(4)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-01 15:07 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 21:04 UTCEG score recompute
  12. 2026-06-28 14:07 UTCEPSS rescore
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-27 20:53 UTCEG score recompute
  16. 2026-06-27 03:08 UTCEPSS rescore
  17. 2026-06-26 19:53 UTCEG score recompute
  18. 2026-06-25 17:28 UTCEG score recompute
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
Show 31 more
  1. 2026-06-21 01:59 UTCEPSS rescore
  2. 2026-06-19 19:26 UTCEPSS rescore
  3. 2026-06-19 19:26 UTCEPSS rescore
  4. 2026-06-18 17:52 UTCEPSS rescore
  5. 2026-06-18 17:52 UTCEPSS rescore
  6. 2026-06-17 20:22 UTCEG score recompute
  7. 2026-06-17 17:53 UTCEPSS rescore
  8. 2026-06-16 21:30 UTCEG score recompute
  9. 2026-06-16 17:53 UTCEPSS rescore
  10. 2026-06-15 17:49 UTCEPSS rescore
  11. 2026-06-15 16:56 UTCEG score recompute
  12. 2026-06-14 14:17 UTCEG score recompute
  13. 2026-06-13 23:00 UTCEPSS rescore
  14. 2026-06-13 14:51 UTCEG score recompute
  15. 2026-06-12 23:12 UTCEPSS rescore
  16. 2026-06-12 23:12 UTCEPSS rescore
  17. 2026-06-12 15:59 UTCEG score recompute
  18. 2026-06-11 16:48 UTCEG score recompute
  19. 2026-06-11 14:00 UTCEPSS rescore
  20. 2026-06-10 17:35 UTCEG score recompute
  21. 2026-06-09 18:45 UTCEG score recompute
  22. 2026-06-08 19:55 UTCEG score recompute
  23. 2026-06-07 21:05 UTCEG score recompute
  24. 2026-06-06 22:15 UTCEG score recompute
  25. 2026-06-05 23:24 UTCEG score recompute
  26. 2026-06-05 00:34 UTCEG score recompute
  27. 2026-06-04 01:44 UTCEG score recompute
  28. 2026-06-03 02:53 UTCEG score recompute
  29. 2026-06-02 04:02 UTCEG score recompute
  30. 2026-06-01 05:12 UTCEG score recompute
  31. 2026-05-24 06:15 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46521?
CVE-2026-46521 is a medium vulnerability published on May 18, 2026. ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and…
When was CVE-2026-46521 disclosed?
CVE-2026-46521 was first published in the National Vulnerability Database on May 18, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46521 actively exploited?
CVE-2026-46521 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46521?
CVE-2026-46521 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-46521?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46521, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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