CVE-2026-47143

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 66% 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, nvd
Trending — 3 sources updated this weekElevated
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in modRMRequired() and decode() when disassembling 3DNow! opcodes (0F 0F) in builds compiled with -DCAPSTONE_X86_REDUCE, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence 0F 0F . Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 21, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_pr.
github Patch Available🟡 PoC Available

NULL Pointer Dereference with 3DNow! opcodes · Advisory · capstone-engine/capstone · GitHub

https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm
github_pr

Backport of CVE-2026-47143 fix

Fix merged in capstone-engine/capstone PR #2924 on 2026-05-19 — awaiting tagged release

https://github.com/capstone-engine/capstone/pull/2924
github_commit

commit fab595205fee (capstone-engine/capstone)

Fix landed in capstone-engine/capstone commit fab595205fee — awaiting tagged release

https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7
github_commit

commit a0201371719b (capstone-engine/capstone)

Fix landed in capstone-engine/capstone commit a0201371719b — awaiting tagged release

https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f

Vendor Advisories for CVE-2026-47143(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatcapstone-main-5.0.8-0.1.hum12026-07-22redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
capstone4.0.2-3 ... 5.0.9-1 (13 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
capstone4.0.2-5 ... 5.0.9-1 (11 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
capstone5.0.6-1, 5.0.7-1, 5.0.7-1~deb13u1, 5.0.7-2, 5.0.9-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
capstone5.0.6-1, 5.0.7-1, 5.0.7-1~deb13u1, 5.0.7-25.0.9-1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
capstone2.0 ... 5.0.7 (24 versions)5.0.8—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 60× 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.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 03:48 UTCEG score recompute
  3. 2026-09-18 03:48 UTCVendor advisory
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 12:37 UTCEG score recompute
  6. 2026-09-16 12:37 UTCVendor advisory
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-13 11:48 UTCEG score recompute
  10. 2026-09-13 11:48 UTCVendor advisory
  11. 2026-09-12 15:01 UTCEPSS rescore
  12. 2026-09-12 10:24 UTCEG score recompute
  13. 2026-09-12 10:24 UTCVendor advisory
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 09:37 UTCEPSS rescore
  16. 2026-09-11 09:00 UTCEG score recompute
  17. 2026-09-11 09:00 UTCVendor advisory
  18. 2026-09-10 09:34 UTCEPSS rescore
  19. 2026-09-09 11:18 UTCEG score recompute
  20. 2026-09-09 11:18 UTCVendor advisory
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-07 22:34 UTCEG score recompute
  23. 2026-09-07 22:34 UTCVendor advisory
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 10:54 UTCEG score recompute
  2. 2026-09-06 10:54 UTCVendor advisory
  3. 2026-09-05 08:31 UTCEG score recompute
  4. 2026-09-05 08:31 UTCVendor advisory
  5. 2026-09-04 05:06 UTCEPSS rescore
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-02 00:56 UTCEG score recompute
  8. 2026-09-02 00:56 UTCVendor advisory
  9. 2026-09-01 13:54 UTCEPSS rescore
  10. 2026-08-31 03:37 UTCEG score recompute
  11. 2026-08-31 03:37 UTCVendor advisory
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 02:12 UTCEG score recompute
  14. 2026-08-30 02:12 UTCVendor advisory
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-27 11:16 UTCEG score recompute
  19. 2026-08-27 11:16 UTCVendor advisory
  20. 2026-08-26 14:46 UTCEPSS rescore
  21. 2026-08-26 07:15 UTCEG score recompute
  22. 2026-08-26 07:15 UTCVendor advisory
  23. 2026-08-25 13:49 UTCEPSS rescore
  24. 2026-08-25 05:35 UTCEG score recompute
  25. 2026-08-25 05:35 UTCVendor advisory
  26. 2026-08-24 04:11 UTCVendor advisory
  27. 2026-08-23 02:47 UTCEG score recompute
  28. 2026-08-23 02:47 UTCVendor advisory
  29. 2026-08-23 00:19 UTCEPSS rescore
  30. 2026-08-22 01:22 UTCEG score recompute
  31. 2026-08-22 01:22 UTCVendor advisory
  32. 2026-08-21 23:49 UTCEPSS rescore
  33. 2026-08-20 23:57 UTCEG score recompute
  34. 2026-08-20 23:57 UTCVendor advisory
  35. 2026-08-20 22:55 UTCEPSS rescore
  36. 2026-08-19 22:33 UTCEG score recompute
  37. 2026-08-19 22:33 UTCVendor advisory
  38. 2026-08-19 17:04 UTCEPSS rescore
  39. 2026-08-18 19:28 UTCEG score recompute
  40. 2026-08-18 19:28 UTCVendor advisory
  41. 2026-08-18 13:48 UTCEPSS rescore
  42. 2026-08-17 15:34 UTCEG score recompute
  43. 2026-08-17 15:34 UTCVendor advisory
  44. 2026-08-17 13:47 UTCEPSS rescore
  45. 2026-08-16 14:56 UTCEPSS rescore
  46. 2026-08-16 14:10 UTCEG score recompute
  47. 2026-08-16 14:10 UTCVendor advisory
  48. 2026-08-16 02:14 UTCEPSS rescore
  49. 2026-08-15 12:46 UTCEG score recompute
  50. 2026-08-15 12:46 UTCVendor advisory
  51. 2026-08-15 01:30 UTCEPSS rescore
  52. 2026-08-14 11:15 UTCEG score recompute
  53. 2026-08-14 11:15 UTCVendor advisory
  54. 2026-08-13 22:00 UTCEPSS rescore
  55. 2026-08-13 09:52 UTCEG score recompute
  56. 2026-08-13 09:52 UTCVendor advisory
  57. 2026-08-12 13:51 UTCEPSS rescore
  58. 2026-08-12 08:28 UTCEG score recompute
  59. 2026-08-12 08:28 UTCVendor advisory
  60. 2026-08-11 07:04 UTCEG score recompute
  61. 2026-08-11 07:04 UTCVendor advisory
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-10 05:40 UTCEG score recompute
  64. 2026-08-10 05:40 UTCVendor advisory
  65. 2026-08-09 13:46 UTCEPSS rescore
  66. 2026-08-09 04:17 UTCEG score recompute
  67. 2026-08-09 04:17 UTCVendor advisory
  68. 2026-08-08 16:37 UTCEPSS rescore
  69. 2026-08-08 02:53 UTCEG score recompute
  70. 2026-08-08 02:53 UTCVendor advisory
  71. 2026-08-07 01:29 UTCEG score recompute
  72. 2026-08-07 01:29 UTCVendor advisory
  73. 2026-08-06 13:47 UTCEPSS rescore
  74. 2026-08-06 00:05 UTCEG score recompute
  75. 2026-08-06 00:05 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-47143?
CVE-2026-47143 is a medium vulnerability published on July 21, 2026. Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in modRMRequired() and decode() when disassembling 3DNow! opcodes (0F 0F) in builds compiled with -DCAPSTONEX86REDUCE, allowing a remote attacker to crash any application using the reduced…
When was CVE-2026-47143 disclosed?
CVE-2026-47143 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47143 actively exploited?
CVE-2026-47143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 66.2% of all scored CVEs.
What is the CVSS score of CVE-2026-47143?
CVE-2026-47143 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-47143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47143, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47143

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