CVE-2026-42483

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

May 1, 2026

Last Modified

May 1, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

Six Security Findings in hashcat v7.1.2 · GitHub

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
hashcat6.1.1+ds1-1 ... 7.1.2+ds1-4 (9 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
hashcat6.2.6+ds1-1 ... 7.1.2+ds1-4 (6 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
hashcat6.2.6+ds2-1, 7.1.2+ds1-1, 7.1.2+ds1-2, 7.1.2+ds1-3, 7.1.2+ds1-4——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
hashcat6.2.6+ds2-1, 7.1.2+ds1-1, 7.1.2+ds1-2, 7.1.2+ds1-3, 7.1.2+ds1-4——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 27× 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 283 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-42483?
CVE-2026-42483 is a critical vulnerability published on May 1, 2026. A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects modulehashdecode in multiple Kerberos-related modules because accountinfolen is…
When was CVE-2026-42483 disclosed?
CVE-2026-42483 was first published in the National Vulnerability Database on May 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42483 actively exploited?
CVE-2026-42483 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 77.0% of all scored CVEs.
What is the CVSS score of CVE-2026-42483?
CVE-2026-42483 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-42483?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42483, 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.

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