CVE-2022-46393

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-12-16. 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%CVSS: 9.8Exploit: None knownExposed: 0

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

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
66%
KEV
Not listed

Published

December 15, 2022

Last Modified

June 5, 2026

Advisory Details (5)

Auto-updated Sep 23, 2026
Patch available. Sources: github_release.
generic

Security Advisories — Mbed TLS documentation

https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
generic

[SECURITY] Fedora 36 Update: mbedtls-2.28.2-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XMKJ5IMJEPXYAHHU56Z4P2FSYIEAESB/
generic

[SECURITY] Fedora 37 Update: mbedtls-2.28.2-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BR7ZCVKLPGCOEEALUHZMFHXQHR6S4QL/
github_release Patch Available

Mbed TLS 3.3.0

Patch available: Mbed-TLS/mbedtls v3.3.0

https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.3.0
github_release Patch Available

Mbed TLS 2.28.2

Patch available: Mbed-TLS/mbedtls v2.28.2

https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.2

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
mbedtls—2.28.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
mbedtls—2.28.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
mbedtls—2.28.2-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 26× 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 155 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2022-46393?
CVE-2022-46393 is a critical vulnerability published on December 15, 2022. An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLSSSLDTLSCONNECTIONID is enabled and MBEDTLSSSLCIDINLENMAX > 2 * MBEDTLSSSLCIDOUTLENMAX.
When was CVE-2022-46393 disclosed?
CVE-2022-46393 was first published in the National Vulnerability Database on December 15, 2022, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-46393 actively exploited?
CVE-2022-46393 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 34.4% of all scored CVEs.
What is the CVSS score of CVE-2022-46393?
CVE-2022-46393 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-46393?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-46393, 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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