CVE-2017-7549

MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.

CVSS v3
6.4
EG Score
6.4(medium)
EPSS
26.9%
KEV
Not listed

Published

September 21, 2017

Last Modified

May 13, 2026

References (14)

Vendor Advisories for CVE-2017-7549(1)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatinstack-undercloud-0:6.1.0-3.el7ost2017-09-13redhat
redhatinstack-undercloud-0:2.2.7-10.el7ost2017-09-12redhat
redhatinstack-undercloud-0:2.1.2-41.el7ost2017-09-12redhat
redhatinstack-undercloud-0:5.3.0-3.el7ost2017-09-06redhat
redhatinstack-undercloud-0:4.0.0-17.el7ost2017-08-30redhat
pipinstack-undercloud—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

(2 across 1 ecosystem)
PyPI(2)
PackageVulnerable rangeFixed inDependents
instack0.0.9.dev4 ... 6.1.0 (6 versions)——
instack-undercloud4.0.1.dev90 ... 7.2.0 (41 versions)——

All Vendor Advisories

(5)

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 11× in last 7d / 46× 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 114 total refreshes for this CVE.

  1. 2026-07-16 16:59 UTCEPSS rescore
  2. 2026-07-16 16:59 UTCEPSS rescore
  3. 2026-07-15 16:55 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-15 01:56 UTCEPSS rescore
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  7. 2026-07-13 22:26 UTCEPSS rescore
  8. 2026-07-13 22:26 UTCEPSS rescore
  9. 2026-07-12 05:43 UTCEPSS rescore
  10. 2026-07-11 17:22 UTCOSV refresh
  11. 2026-07-11 08:24 UTCEPSS rescore
  12. 2026-07-09 19:06 UTCEPSS rescore
  13. 2026-07-08 15:11 UTCEPSS rescore
  14. 2026-07-07 13:42 UTCEPSS rescore
  15. 2026-07-06 16:24 UTCEPSS rescore
  16. 2026-07-06 16:24 UTCEPSS rescore
  17. 2026-07-06 02:20 UTCEPSS rescore
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  19. 2026-07-05 02:27 UTCEPSS rescore
  20. 2026-07-04 06:28 UTCEPSS rescore
  21. 2026-07-04 06:28 UTCEPSS rescore
  22. 2026-07-02 16:54 UTCEPSS rescore
  23. 2026-07-01 15:03 UTCEPSS rescore
  24. 2026-06-30 23:19 UTCEPSS rescore
  25. 2026-06-30 23:19 UTCEPSS rescore
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  1. 2026-06-29 14:03 UTCEPSS rescore
  2. 2026-06-28 14:04 UTCEPSS rescore
  3. 2026-06-28 04:53 UTCEPSS rescore
  4. 2026-06-28 04:53 UTCEPSS rescore
  5. 2026-06-27 03:06 UTCEPSS rescore
  6. 2026-06-25 13:47 UTCEPSS rescore
  7. 2026-06-24 14:02 UTCEPSS rescore
  8. 2026-06-24 14:02 UTCEPSS rescore
  9. 2026-06-23 21:30 UTCEPSS rescore
  10. 2026-06-23 21:30 UTCEPSS rescore
  11. 2026-06-23 00:00 UTCOSV refresh
  12. 2026-06-22 14:23 UTCEPSS rescore
  13. 2026-06-22 14:23 UTCEPSS rescore
  14. 2026-06-21 14:54 UTCEPSS rescore
  15. 2026-06-21 14:54 UTCEPSS rescore
  16. 2026-06-21 01:57 UTCEPSS rescore
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  18. 2026-06-19 19:23 UTCEPSS rescore
  19. 2026-06-19 19:23 UTCEPSS rescore
  20. 2026-06-18 17:50 UTCEPSS rescore
  21. 2026-06-17 17:50 UTCEPSS rescore
  22. 2026-06-16 17:50 UTCEPSS rescore
  23. 2026-06-15 17:45 UTCEPSS rescore
  24. 2026-06-14 23:14 UTCEPSS rescore
  25. 2026-06-14 23:14 UTCEPSS rescore
  26. 2026-06-13 22:58 UTCEPSS rescore
  27. 2026-06-13 22:57 UTCEPSS rescore
  28. 2026-06-12 23:09 UTCEPSS rescore
  29. 2026-06-12 23:09 UTCEPSS rescore
  30. 2026-06-11 13:57 UTCEPSS rescore
  31. 2026-06-10 22:15 UTCEPSS rescore
  32. 2026-06-10 13:19 UTCEPSS rescore
  33. 2026-06-08 14:14 UTCEPSS rescore
  34. 2026-06-08 14:14 UTCEPSS rescore
  35. 2026-06-07 15:22 UTCEPSS rescore
  36. 2026-06-07 15:22 UTCEPSS rescore
  37. 2026-06-06 13:45 UTCEPSS rescore
  38. 2026-06-06 13:45 UTCEPSS rescore
  39. 2026-06-05 22:44 UTCEPSS rescore
  40. 2026-06-05 22:44 UTCEPSS rescore
  41. 2026-06-05 17:57 UTCOSV refresh
  42. 2026-06-05 06:08 UTCEPSS rescore
  43. 2026-06-05 06:08 UTCEPSS rescore
  44. 2026-06-04 13:10 UTCEPSS rescore
  45. 2026-06-04 13:10 UTCEPSS rescore
  46. 2026-06-02 20:11 UTCEPSS rescore
  47. 2026-06-02 20:11 UTCEPSS rescore
  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 00:14 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
  52. 2026-05-29 13:41 UTCEPSS rescore
  53. 2026-05-28 13:42 UTCEPSS rescore
  54. 2026-05-28 13:42 UTCEPSS rescore
  55. 2026-05-27 13:38 UTCEPSS rescore
  56. 2026-05-27 13:38 UTCEPSS rescore
  57. 2026-05-26 13:42 UTCEPSS rescore
  58. 2026-05-26 07:17 UTCEPSS rescore
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  60. 2026-05-22 21:15 UTCEPSS rescore
  61. 2026-05-22 21:15 UTCEPSS rescore
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  64. 2026-05-22 21:15 UTCEPSS rescore
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  66. 2026-05-22 21:15 UTCEPSS rescore
  67. 2026-05-22 09:36 UTCEG score recompute
  68. 2026-05-22 09:36 UTCVendor advisory
  69. 2026-05-22 09:36 UTCGHSA enrichment
  70. 2026-05-21 22:40 UTCEPSS rescore
  71. 2026-05-21 22:40 UTCEPSS rescore
  72. 2026-05-20 22:37 UTCEPSS rescore
  73. 2026-05-20 22:37 UTCEPSS rescore
  74. 2026-05-20 22:37 UTCEPSS rescore
  75. 2026-05-20 22:37 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-7549?
CVE-2017-7549 is a medium vulnerability published on September 21, 2017. A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, where pre-install and security policy scripts used insecure temporary files. A local user could exploit…
When was CVE-2017-7549 disclosed?
CVE-2017-7549 was first published in the National Vulnerability Database on September 21, 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-2017-7549 actively exploited?
CVE-2017-7549 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-7549?
CVE-2017-7549 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2017-7549?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-7549, 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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