CVE-2024-0397

HIGHNVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2024-06-17. NVD baseline CVSS 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.4Exploit: None knownExposed: 0

A fix is available — apply it.

A defect was discovered in the Python “ssl” module where there is a memory race condition with the ssl.SSLContext methods “cert_store_stats()” and “get_ca_certs()”. The race condition can be triggered if the methods are called at the same time as certificates are loaded into the SSLContext, such as during the TLS handshake with a certificate directory configured. This issue is fixed in CPython 3.10.14, 3.11.9, 3.12.3, and 3.13.0a5.

CVSS v3
7.4
EG Score
7.4(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity74% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

June 17, 2024

Last Modified

April 15, 2026

References (22)

Vendor Advisories for CVE-2024-0397(4)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3.10-venv (3.10.12-1~22.04.5) @ jammy2026-05-22ubuntu
redhatpython3.9-0:3.9.21-1.el9_52024-12-12redhat
redhatpython3.12-0:3.12.5-2.el92024-11-12redhat
redhatpython3.11-0:3.11.9-7.el92024-11-12redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 4 ecosystems)
Debian:11(3)
PackageVulnerable rangeFixed inDependents
pypy37.3.10+dfsg-1 ... 7.3.9+dfsg-5 (53 versions)——
python2.72.7.18-10 ... 2.7.18-9 (10 versions)——
python3.93.9.2-1, 3.9.2-1+deb11u13.9.2-1+deb11u2—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
pypy37.3.11+dfsg-2 ... 7.3.23+dfsg-1 (29 versions)——
python3.113.11.2-6, 3.11.2-6+deb12u1, 3.11.2-6+deb12u23.11.2-6+deb12u3—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.16+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.16+dfsg-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 178 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2024-0397?
CVE-2024-0397 is a high vulnerability published on June 17, 2024. A defect was discovered in the Python “ssl” module where there is a memory race condition with the ssl.SSLContext methods “certstorestats()” and “getcacerts()”. The race condition can be triggered if the methods are called at the same time as certificates are loaded into the SSLContext, such as…
When was CVE-2024-0397 disclosed?
CVE-2024-0397 was first published in the National Vulnerability Database on June 17, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-0397 actively exploited?
CVE-2024-0397 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 44.6% of all scored CVEs.
What is the CVSS score of CVE-2024-0397?
CVE-2024-0397 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2024-0397?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-0397, 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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