CVE-2017-5493

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity75% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
86%
KEV
Not listed

Published

January 15, 2017

Last Modified

June 17, 2026

References (16)

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wordpress—4.7.1+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wordpress—4.7.1+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wordpress—4.7.1+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wordpress—4.7.1+dfsg-1—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
wordpress3.5.1+dfsg-2 ... 3.6.1+dfsg-1~deb7u9 (25 versions)3.6.1+dfsg-1~deb7u13—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
wordpress4.1+dfsg-1 ... 4.1+dfsg-1+deb8u9 (12 versions)4.1+dfsg-1+deb8u12—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 22× 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 141 total refreshes for this CVE.

  1. 2026-09-18 19:22 UTCEPSS rescore
  2. 2026-09-18 17:20 UTCOSV refresh
  3. 2026-09-17 19:22 UTCEPSS rescore
  4. 2026-09-15 03:05 UTCEPSS rescore
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  16. 2026-08-30 20:55 UTCOSV refresh
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  1. 2026-08-16 14:51 UTCEPSS rescore
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  3. 2026-08-15 01:26 UTCEPSS rescore
  4. 2026-08-14 07:29 UTCOSV refresh
  5. 2026-08-12 13:46 UTCEPSS rescore
  6. 2026-08-09 13:42 UTCEPSS rescore
  7. 2026-08-07 16:22 UTCEPSS rescore
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  9. 2026-08-05 19:12 UTCEPSS rescore
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  11. 2026-08-02 02:23 UTCEPSS rescore
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  13. 2026-07-30 16:24 UTCEPSS rescore
  14. 2026-07-30 01:26 UTCEPSS rescore
  15. 2026-07-29 14:37 UTCOSV refresh
  16. 2026-07-28 15:32 UTCEPSS rescore
  17. 2026-07-26 14:51 UTCEPSS rescore
  18. 2026-07-23 14:15 UTCEPSS rescore
  19. 2026-07-23 01:29 UTCEG score recompute
  20. 2026-07-22 22:09 UTCEG score recompute
  21. 2026-07-22 14:04 UTCEPSS rescore
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  23. 2026-07-21 15:21 UTCEPSS rescore
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  25. 2026-07-20 17:04 UTCEPSS rescore
  26. 2026-07-19 14:28 UTCEPSS rescore
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  37. 2026-07-12 05:43 UTCEPSS rescore
  38. 2026-07-12 04:52 UTCOSV refresh
  39. 2026-07-11 08:24 UTCEPSS rescore
  40. 2026-07-09 19:06 UTCEPSS rescore
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  51. 2026-06-30 23:19 UTCEPSS rescore
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  58. 2026-06-25 13:47 UTCEPSS rescore
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  61. 2026-06-23 21:30 UTCEPSS rescore
  62. 2026-06-23 11:00 UTCOSV refresh
  63. 2026-06-22 14:23 UTCEPSS rescore
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  65. 2026-06-19 19:23 UTCEPSS rescore
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  67. 2026-06-18 17:50 UTCEPSS rescore
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  73. 2026-06-13 22:57 UTCEPSS rescore
  74. 2026-06-12 23:09 UTCEPSS rescore
  75. 2026-06-10 22:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-5493?
CVE-2017-5493 is a high vulnerability published on January 15, 2017. wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.
When was CVE-2017-5493 disclosed?
CVE-2017-5493 was first published in the National Vulnerability Database on January 15, 2017, 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-2017-5493 actively exploited?
CVE-2017-5493 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 13.8% of all scored CVEs.
What is the CVSS score of CVE-2017-5493?
CVE-2017-5493 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-5493?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-5493, 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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