CVE-2022-40138

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-10-11. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.2%
EPSS %ILE
66th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). 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

October 11, 2022

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Oct 10, 2026
Patch available. Sources: github_commit.
generic

Facebook

https://www.facebook.com/security/advisories/CVE-2022-40138
github_commit Patch Available

commit 6aa825e480d4 (facebook/hermes)

Patch available: facebook/hermes v0.13.0 (contains commit 6aa825e480d4)

https://github.com/facebook/hermes/commit/6aa825e480d48127b480b08d13adf70033237097

Weakness Classification(1)

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 180 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-40138?
CVE-2022-40138 is a critical vulnerability published on October 11, 2022. An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute…
When was CVE-2022-40138 disclosed?
CVE-2022-40138 was first published on October 11, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-40138 actively exploited?
CVE-2022-40138 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (66th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-40138?
CVE-2022-40138 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-40138?
A fix for CVE-2022-40138 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2022-40138

Explore →

Is Your Infrastructure Affected by CVE-2022-40138?

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

Book a Demo →Browse All CVEs