CVE-2013-7440

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 5.9Exploit: None knownExposed: 0

A fix is available — apply it.

The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity59% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
78%
KEV
Not listed

Published

June 7, 2016

Last Modified

June 17, 2026

References (14)

Vendor Advisories for CVE-2013-7440(2)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpython27-scipy-0:0.12.1-4.el72016-05-31redhat
redhatpython-httplib2-0:0.6.0-6.el7sat2014-09-10redhat

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

(1 across 1 ecosystem)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
python2.7—2.7.9-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× 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 118 total refreshes for this CVE.

  1. 2026-08-09 13:42 UTCEPSS rescore
  2. 2026-08-08 16:31 UTCEPSS rescore
  3. 2026-08-07 16:21 UTCEPSS rescore
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  10. 2026-07-29 23:37 UTCOSV refresh
  11. 2026-07-28 15:31 UTCEPSS rescore
  12. 2026-07-23 14:14 UTCEPSS rescore
  13. 2026-07-23 01:11 UTCEG score recompute
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  15. 2026-07-22 21:53 UTCEG score recompute
  16. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-15 16:54 UTCEPSS rescore
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  5. 2026-07-13 06:08 UTCEPSS rescore
  6. 2026-07-12 09:38 UTCOSV refresh
  7. 2026-07-12 05:42 UTCEPSS rescore
  8. 2026-07-09 19:05 UTCEPSS rescore
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  17. 2026-06-30 23:19 UTCEPSS rescore
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  20. 2026-06-28 04:53 UTCEPSS rescore
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  22. 2026-06-27 03:05 UTCEPSS rescore
  23. 2026-06-25 13:47 UTCEPSS rescore
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  27. 2026-06-23 21:30 UTCEPSS rescore
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  29. 2026-06-23 15:00 UTCOSV refresh
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  40. 2026-06-16 17:49 UTCEPSS rescore
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  44. 2026-06-14 23:14 UTCEPSS rescore
  45. 2026-06-13 22:57 UTCEPSS rescore
  46. 2026-06-12 23:08 UTCEPSS rescore
  47. 2026-06-11 13:56 UTCEPSS rescore
  48. 2026-06-10 22:15 UTCEPSS rescore
  49. 2026-06-10 13:18 UTCEPSS rescore
  50. 2026-06-08 14:14 UTCEPSS rescore
  51. 2026-06-07 15:22 UTCEPSS rescore
  52. 2026-06-06 18:59 UTCOSV refresh
  53. 2026-06-06 13:45 UTCEPSS rescore
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  55. 2026-06-05 22:44 UTCEPSS rescore
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  63. 2026-06-01 13:49 UTCEPSS rescore
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  65. 2026-05-31 22:28 UTCEPSS rescore
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  74. 2026-05-27 13:38 UTCEPSS rescore
  75. 2026-05-27 13:38 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2013-7440?
CVE-2013-7440 is a medium vulnerability published on June 7, 2016. The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.
When was CVE-2013-7440 disclosed?
CVE-2013-7440 was first published in the National Vulnerability Database on June 7, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-7440 actively exploited?
CVE-2013-7440 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 21.7% of all scored CVEs.
What is the CVSS score of CVE-2013-7440?
CVE-2013-7440 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2013-7440?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-7440, 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.

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