CVE-2013-7459

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2018-12-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 10%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Heap-based buffer overflow in the ALGnew function in block_templace.c in Python Cryptography Toolkit (aka pycrypto) allows remote attackers to execute arbitrary code as demonstrated by a crafted iv parameter to cryptmsg.py.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.9%
KEV
Not listed

Published

February 15, 2017

Last Modified

May 13, 2026

Advisory Details (8)

Auto-updated Jun 21, 2026
Upstream fix merged — awaiting tagged release. Sources: redhat, github_commit.
generic

oss-security - Re: Buffer overflow in pycrypto

http://www.openwall.com/lists/oss-security/2016/12/27/8
generic

PyCrypto: Remote execution of arbitrary code (GLSA 201702-14) — Gentoo security

https://security.gentoo.org/glsa/201702-14
generic

[SECURITY] Fedora 25 Update: python-crypto-2.6.1-13.fc25 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJ37R2YLX56YZABFNAOWV4VTHTGYREAE/
generic

[SECURITY] Fedora 24 Update: python-crypto-2.6.1-13.fc24 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C6BWNADPLKDBBQBUT3P75W7HAJCE7M3B/
generic

AES.new with invalid parameter crashes python · Issue #176 · pycrypto/pycrypto · GitHub

https://github.com/dlitz/pycrypto/issues/176
github_commit

commit 8dbe0dc3eea5 (dlitz/pycrypto)

Fix landed in dlitz/pycrypto commit 8dbe0dc3eea5 — awaiting tagged release

https://github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4
redhat

1409754 – (CVE-2013-7459) CVE-2013-7459 pycrypto: Heap-buffer overflow in ALGobject structure

https://bugzilla.redhat.com/show_bug.cgi?id=1409754
generic
http://www.securityfocus.com/bid/95122

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3-crypto (2.6.1-6ubuntu0.16.04.2) @ xenial2026-05-20ubuntu
ubuntupython3-crypto (2.6.1-4ubuntu0.1) @ trusty2026-05-20ubuntu
ubuntupython-crypto (2.4.1-1ubuntu0.2) @ precise2026-05-20ubuntu
pippycrypto—ghsa

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)
PyPI(1)
PackageVulnerable rangeFixed inDependents
pycrypto1.9a2 ... 2.6.1 (13 versions)8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4—

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 32× 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.

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

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pip:pycrypto

Frequently asked(5)

What is CVE-2013-7459?
CVE-2013-7459 is a critical vulnerability published on February 15, 2017. Heap-based buffer overflow in the ALGnew function in block_templace.c in Python Cryptography Toolkit (aka pycrypto) allows remote attackers to execute arbitrary code as demonstrated by a crafted iv parameter to cryptmsg.py.
When was CVE-2013-7459 disclosed?
CVE-2013-7459 was first published in the National Vulnerability Database on February 15, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-7459 actively exploited?
CVE-2013-7459 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2013-7459?
CVE-2013-7459 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2013-7459?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-7459, 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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