CVE-2022-4996

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM 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 — 4 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: 0.6%CVSS: 5.3Exploit: Elevated riskExposed services: Not assessed

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

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
5.3MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No fix on record yet.
generic

huntr - The world's first bug bounty platform for AI/ML

https://huntr.com/bounties/5a5092df-1699-4497-a8b2-38318bce0c4e

Vendor Advisories for CVE-2022-4996(2)

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 21× in last 7d / 81× 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 148 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 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 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-4996?
CVE-2022-4996 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2022-4996?
No fix for CVE-2022-4996 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2022-4996 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2022-4996

Explore →

Is Your Infrastructure Affected by CVE-2022-4996?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs