CVE-2017-12424

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. 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: 3%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
83.9%
KEV
Not listed

Published

August 4, 2017

Last Modified

May 13, 2026

Advisory Details (5)

Auto-updated May 16, 2026
Patch available.
generic

Shadow: Buffer overflow (GLSA 201710-16) — Gentoo security

https://security.gentoo.org/glsa/201710-16
generic Patch Available

[SECURITY] [DLA 2596-1] shadow security update

https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html
generic

Fix buffer overflow if NULL line is present in db. · shadow-maint/shadow@954e3d2 · GitHub

https://github.com/shadow-maint/shadow/commit/954e3d2e7113e9ac06632aee3c69b8d818cc8952
generic

Bug #1266675 “newusers error adding more than one user” : Bugs : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675
generic Patch Available

#756630 - shadow: CVE-2017-12424: newusers fails with multiple users - Debian Bug report logs

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756630

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuuidmap (1:4.2-3.1ubuntu5.5+esm1) @ xenial2026-05-20ubuntu

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.

All Vendor Advisories

(1)

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

Frequently asked(5)

What is CVE-2017-12424?
CVE-2017-12424 is a critical vulnerability published on August 4, 2017. In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example,…
When was CVE-2017-12424 disclosed?
CVE-2017-12424 was first published in the National Vulnerability Database on August 4, 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-2017-12424 actively exploited?
CVE-2017-12424 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-12424?
CVE-2017-12424 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-12424?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-12424, 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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