CVE-2022-4996

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-20. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to apply a patch to resolve this issue.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

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Vendor Advisories for CVE-2022-4996(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 84× 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. 2026-09-18 23:48 UTCEG score recompute
  2. 2026-09-18 23:48 UTCGHSA enrichment
  3. 2026-09-18 00:08 UTCEG score recompute
  4. 2026-09-18 00:08 UTCGHSA enrichment
  5. 2026-09-16 23:18 UTCEG score recompute
  6. 2026-09-16 23:18 UTCGHSA enrichment
  7. 2026-09-16 14:05 UTCEPSS rescore
  8. 2026-09-16 05:11 UTCEPSS rescore
  9. 2026-09-15 23:41 UTCEG score recompute
  10. 2026-09-15 23:41 UTCGHSA enrichment
  11. 2026-09-15 03:07 UTCEPSS rescore
  12. 2026-09-14 23:51 UTCGHSA enrichment
  13. 2026-09-14 00:14 UTCEG score recompute
  14. 2026-09-14 00:14 UTCGHSA enrichment
  15. 2026-09-13 16:44 UTCEPSS rescore
  16. 2026-09-13 00:38 UTCEG score recompute
  17. 2026-09-13 00:38 UTCGHSA enrichment
  18. 2026-09-12 00:59 UTCEG score recompute
  19. 2026-09-12 00:59 UTCGHSA enrichment
  20. 2026-09-11 14:50 UTCEPSS rescore
  21. 2026-09-11 09:34 UTCEPSS rescore
  22. 2026-09-11 01:22 UTCEG score recompute
  23. 2026-09-11 01:22 UTCGHSA enrichment
  24. 2026-09-10 01:45 UTCGHSA enrichment
  25. 2026-09-09 02:08 UTCEG score recompute
Show 65 more
  1. 2026-09-09 02:08 UTCGHSA enrichment
  2. 2026-09-08 21:57 UTCEPSS rescore
  3. 2026-09-07 15:59 UTCEPSS rescore
  4. 2026-09-07 12:12 UTCEG score recompute
  5. 2026-09-07 12:12 UTCGHSA enrichment
  6. 2026-09-06 13:45 UTCEPSS rescore
  7. 2026-09-06 12:26 UTCEG score recompute
  8. 2026-09-06 12:26 UTCGHSA enrichment
  9. 2026-09-05 15:25 UTCEPSS rescore
  10. 2026-09-05 12:50 UTCEG score recompute
  11. 2026-09-05 12:49 UTCGHSA enrichment
  12. 2026-09-04 13:57 UTCEPSS rescore
  13. 2026-09-04 13:11 UTCEG score recompute
  14. 2026-09-04 13:11 UTCGHSA enrichment
  15. 2026-09-04 05:04 UTCEPSS rescore
  16. 2026-09-03 13:34 UTCEG score recompute
  17. 2026-09-03 13:33 UTCGHSA enrichment
  18. 2026-09-02 14:09 UTCEPSS rescore
  19. 2026-09-02 13:54 UTCGHSA enrichment
  20. 2026-09-01 13:56 UTCEG score recompute
  21. 2026-09-01 13:56 UTCGHSA enrichment
  22. 2026-09-01 13:51 UTCEPSS rescore
  23. 2026-08-31 14:10 UTCEG score recompute
  24. 2026-08-31 14:10 UTCGHSA enrichment
  25. 2026-08-30 19:15 UTCEPSS rescore
  26. 2026-08-30 14:14 UTCEG score recompute
  27. 2026-08-30 14:14 UTCGHSA enrichment
  28. 2026-08-30 01:19 UTCEPSS rescore
  29. 2026-08-29 14:37 UTCEG score recompute
  30. 2026-08-29 14:37 UTCGHSA enrichment
  31. 2026-08-28 21:38 UTCEPSS rescore
  32. 2026-08-28 14:58 UTCGHSA enrichment
  33. 2026-08-27 15:06 UTCEG score recompute
  34. 2026-08-27 15:05 UTCGHSA enrichment
  35. 2026-08-27 14:22 UTCEPSS rescore
  36. 2026-08-26 15:28 UTCEG score recompute
  37. 2026-08-26 15:28 UTCGHSA enrichment
  38. 2026-08-26 15:27 UTCGHSA enrichment
  39. 2026-08-26 14:43 UTCEPSS rescore
  40. 2026-08-25 15:48 UTCEG score recompute
  41. 2026-08-25 15:48 UTCGHSA enrichment
  42. 2026-08-25 13:46 UTCEPSS rescore
  43. 2026-08-24 16:12 UTCEG score recompute
  44. 2026-08-24 16:12 UTCGHSA enrichment
  45. 2026-08-23 16:34 UTCEG score recompute
  46. 2026-08-23 16:34 UTCGHSA enrichment
  47. 2026-08-23 00:17 UTCEPSS rescore
  48. 2026-08-22 16:58 UTCEG score recompute
  49. 2026-08-22 16:58 UTCGHSA enrichment
  50. 2026-08-21 23:46 UTCEPSS rescore
  51. 2026-08-21 17:21 UTCEG score recompute
  52. 2026-08-21 17:21 UTCGHSA enrichment
  53. 2026-08-21 17:21 UTCNVD updateCVSS v4 → 5.5
  54. 2026-08-21 17:05 UTCEG score recompute
  55. 2026-08-21 17:05 UTCGHSA enrichment
  56. 2026-08-21 17:04 UTCMITRE cvelistV5CVSS v4 → 6.9
  57. 2026-08-21 12:27 UTCEG score recompute
  58. 2026-08-21 12:27 UTCGHSA enrichment
  59. 2026-08-20 22:53 UTCEPSS rescore
  60. 2026-08-20 12:50 UTCEG score recompute
  61. 2026-08-20 12:50 UTCGHSA enrichment
  62. 2026-08-20 00:20 UTCEG score recompute
  63. 2026-08-20 00:19 UTCNVD updateCVSS v4 → 5.5
  64. 2026-08-19 23:58 UTCEG score recompute
  65. 2026-08-19 23:57 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2022-4996?
CVE-2022-4996 is a medium vulnerability published on August 19, 2026. A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to…
When was CVE-2022-4996 disclosed?
CVE-2022-4996 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-4996 actively exploited?
CVE-2022-4996 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 59.2% of all scored CVEs.
What is the CVSS score of CVE-2022-4996?
CVE-2022-4996 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2022-4996?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-4996, 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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