CVE-2026-47143

MEDIUMNVD 5.95.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.5% (38th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
5.9EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.9Exploit: No code on recordExposed services: Not assessed

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
5.9MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100

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 (value × EchelonGraph’s weight)
Severity59% × 45%
The EG Score, 5.9 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 21, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 21, 2026
Patch available. Sources: github, github_commit, github_pr.
GitHub advisoryMentions a patch (unverified)

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

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

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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
capstone4.0.2-3 ... 5.0.9-1 (13 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
capstone4.0.2-5 ... 5.0.9-1 (11 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
capstone5.0.6-1, 5.0.7-1, 5.0.7-1~deb13u1, 5.0.7-2, 5.0.9-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
capstone5.0.6-1, 5.0.7-1, 5.0.7-1~deb13u1, 5.0.7-2
  • every version up to 5.0.9-1: fixed in 5.0.9-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
capstone2.0 ... 5.0.7 (24 versions)
  • every version up to 5.0.8: fixed in 5.0.8
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 174 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 74 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-12 16:02 UTCEG score recompute
  4. 2026-10-11 19:45 UTCEG score recompute
  5. 2026-10-11 16:59 UTCEG score recompute
  6. 2026-10-11 14:24 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  15. 2026-10-04 14:47 UTCEG score recompute
  16. 2026-10-04 14:47 UTCVendor advisory
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-01 07:27 UTCEG score recompute
  20. 2026-10-01 07:27 UTCVendor advisory
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-09-28 06:06 UTCEG score recompute
  24. 2026-09-28 06:06 UTCVendor advisory
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  2. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  3. 2026-09-24 03:22 UTCEG score recompute
  4. 2026-09-24 03:22 UTCVendor advisory
  5. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-09-23 01:24 UTCEG score recompute
  7. 2026-09-23 01:24 UTCVendor advisory
  8. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-09-20 05:56 UTCEG score recompute
  10. 2026-09-20 05:56 UTCVendor advisory
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-09-18 03:48 UTCEG score recompute
  13. 2026-09-18 03:48 UTCVendor advisory
  14. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-09-16 12:37 UTCEG score recompute
  16. 2026-09-16 12:37 UTCVendor advisory
  17. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-13 11:48 UTCEG score recompute
  20. 2026-09-13 11:48 UTCVendor advisory
  21. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-09-12 10:24 UTCEG score recompute
  23. 2026-09-12 10:24 UTCVendor advisory
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  26. 2026-09-11 09:00 UTCEG score recompute
  27. 2026-09-11 09:00 UTCVendor advisory
  28. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  29. 2026-09-09 11:18 UTCEG score recompute
  30. 2026-09-09 11:18 UTCVendor advisory
  31. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  32. 2026-09-07 22:34 UTCEG score recompute
  33. 2026-09-07 22:34 UTCVendor advisory
  34. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  35. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  36. 2026-09-06 10:54 UTCEG score recompute
  37. 2026-09-06 10:54 UTCVendor advisory
  38. 2026-09-05 08:31 UTCEG score recompute
  39. 2026-09-05 08:31 UTCVendor advisory
  40. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  41. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  42. 2026-09-02 00:56 UTCEG score recompute
  43. 2026-09-02 00:56 UTCVendor advisory
  44. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  45. 2026-08-31 03:37 UTCEG score recompute
  46. 2026-08-31 03:37 UTCVendor advisory
  47. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  48. 2026-08-30 02:12 UTCEG score recompute
  49. 2026-08-30 02:12 UTCVendor advisory
  50. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  51. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  52. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  53. 2026-08-27 11:16 UTCEG score recompute
  54. 2026-08-27 11:16 UTCVendor advisory
  55. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  56. 2026-08-26 07:15 UTCEG score recompute
  57. 2026-08-26 07:15 UTCVendor advisory
  58. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  59. 2026-08-25 05:35 UTCEG score recompute
  60. 2026-08-25 05:35 UTCVendor advisory
  61. 2026-08-24 04:11 UTCVendor advisory
  62. 2026-08-23 02:47 UTCEG score recompute
  63. 2026-08-23 02:47 UTCVendor advisory
  64. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  65. 2026-08-22 01:22 UTCEG score recompute
  66. 2026-08-22 01:22 UTCVendor advisory
  67. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  68. 2026-08-20 23:57 UTCEG score recompute
  69. 2026-08-20 23:57 UTCVendor advisory
  70. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  71. 2026-08-19 22:33 UTCEG score recompute
  72. 2026-08-19 22:33 UTCVendor advisory
  73. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  74. 2026-08-18 19:28 UTCEG score recompute
  75. 2026-08-18 19:28 UTCVendor advisory

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-47143?
CVE-2026-47143 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-47143 published?
The CVE record for CVE-2026-47143 was published on July 21, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 30, 2026; the record at its source may have been updated since.
Is CVE-2026-47143 actively exploited?
CVE-2026-47143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-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?
A fix for CVE-2026-47143 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47143 are linked in the Vendor Advisories panel on this page.

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